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Ansell BDOB-L BioClean-D Longer Length Overboots Class 10 (ISO 4)

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Ansell BioClean-D BDOB-L Longer-Length Non-Sterile Cleanroom Overboots - Class 10 / ISO 4 - 150 Overboots/Case

Ansell BioClean-D™ BDOB-L longer-length cleanroom overboots provide additional footwear and lower-leg coverage for pharmaceutical manufacturing, biotechnology, medical device production, laboratory operations, and other contamination-controlled environments. Manufactured from lightweight, low-linting CleanTough™ polyethylene and nonwoven polypropylene laminate, these disposable overboots help reduce the transfer of footwear-related contamination when used with an approved cleanroom gowning procedure.

The 500 mm (approximately 19.7-inch) longer-length design provides additional lower-leg coverage compared with standard shoe covers. Integral tie fastenings at the ankle and upper opening help maintain a secure fit, while a slip-resistant polyethylene/polypropylene sole supports controlled walking on suitable cleanroom floors.

BioClean-D BDOB-L overboots feature antistatic, static-dissipative CleanTough™ material, bound seams with single-needle stitching, and manufacturer-documented particle-shedding and chemical-protection performance. They are designed for Class 10 / ISO Class 4 cleanrooms and are supplied non-sterile in universal size.

Each manufacturer case contains 150 individual overboots, packaged as 30 pieces per sealed inner polyethylene bag, one inner bag per sealed outer bag, and five outer bags per lined carton.

Extended Footwear Coverage Advantage: BioClean-D BDOB-L combines 500 mm lower-leg coverage, low-linting CleanTough™ laminate, static-dissipative material characteristics, adjustable ankle and upper ties, and a slip-resistant sole. Its non-sterile ISO Class 4 design supports controlled footwear management when used with qualified gowning boundaries, proper garment interfaces, and facility-approved handling procedures.

Specifications:
  • Manufacturer: Ansell
  • Brand: BioClean-D™
  • Manufacturer Part Number: BDOB-L
  • Product Type: Longer-Length Disposable Cleanroom Overboots
  • Cleanroom Classification: Class 10 / ISO Class 4
  • Sterility: Non-sterile
  • Material: CleanTough™ polyethylene / nonwoven polypropylene laminate
  • Color: White
  • Material Characteristics: Lightweight, low-linting, static dissipative
  • Length / Height: 500 mm (approximately 19.7 inches)
  • Available Size: Universal
  • Sole Material: Polyethylene/polypropylene (PE/PP)
  • Sole Design: Slip-resistant
  • Construction: Bound seams with single-needle stitching
  • Closure Type: Integral tie fastenings
  • Closure Locations: Ankle and upper opening
  • Elasticated Ankle: No
  • Natural Rubber Latex: Not present in the manufacturer-described material construction
  • Particle Shedding: Less than 2,000 counts/min for particles ≥0.5 µm
  • Particle Test Method: Helmke Drum Test
  • Electrostatic Characteristics: Static-dissipative CleanTough™ material
  • Electrostatic Charge Half-Decay Time: 0.07 seconds
  • Electrostatic Performance Standard: EN 1149-5
  • European PPE Category: Category III
  • Chemical Protective Clothing Standard: EN 13034:2005 + A1:2009
  • Additional Manufacturer Standards: EN ISO 13688, EN 13934-1, EN 13935-2, EN 6530, EN 7854, EN 863, EN 9073-4 and EN ISO 14325
  • Chemotherapy Permeation Testing: ASTM F739-12
  • Permeation Breakthrough Criterion: 0.1 µg/cm²/min
  • Seam Strength: 70 N
  • Puncture Resistance: 8 N
  • Country of Origin: China
  • Manufacturing Quality-System Standard: ISO 9001
  • Published Shelf Life: Five years from date of manufacture
  • Storage: Dry conditions in original packaging, protected from direct sunlight and ozone
  • Inner Packaging: 30 individual overboots per sealed polyethylene bag
  • Outer Packaging: One sealed inner bag per sealed outer polyethylene bag
  • Case Packaging: Five outer bags per lined carton
  • Case Quantity: 150 individual overboots
  • Ordering Configuration: BDOB-L; universal size; case of 150 individual overboots
About the Manufacturer:

Ansell develops protective gloves, cleanroom apparel, footwear covers, and specialized personal protective equipment for pharmaceutical manufacturing, biotechnology, medical device production, laboratory research, and other controlled environments. Its BioClean™ portfolio includes sterile and non-sterile protective garments designed to support contamination-control programs.

BioClean-D™ protective apparel uses CleanTough™ laminate to provide lightweight, low-linting coverage with documented chemical and electrostatic performance characteristics. The BDOB-L overboot combines an extended 500 mm design with top and ankle tie fastenings to support footwear and lower-leg contamination management.

SOSCleanroom supports customers with Ansell product selection, manufacturer technical documentation, cleanroom gowning requirements, sterile and non-sterile garment comparisons, and procurement assistance for critical environments.

BioClean-D BDOB-L Features:
  • Non-sterile longer-length cleanroom overboot
  • Class 10 / ISO Class 4 cleanroom compatibility
  • 500 mm extended lower-leg coverage
  • White CleanTough™ polyethylene/polypropylene laminate
  • Low-linting lightweight material construction
  • Static-dissipative material characteristics
  • Published 0.07-second electrostatic charge half-decay result
  • Bound seams with single-needle stitching
  • Integral upper tie fastenings
  • Integral ankle tie fastenings
  • Slip-resistant PE/PP sole
  • Universal-size configuration
  • Published Helmke Drum particle-shedding performance
  • Manufacturer-documented mechanical and liquid-resistance testing
  • ASTM F739-12 chemotherapy-drug permeation test results
  • Category III protective clothing classification
  • Five-year published shelf life
  • Sealed inner and outer polyethylene packaging
  • 150 individual overboots per case
BioClean-D BDOB-L Benefits:
  • Extended Lower-Leg Coverage: The 500 mm length provides additional protection beyond ordinary short shoe covers.
  • Footwear Contamination Control: Helps manage the transfer of particles and debris from footwear into controlled areas.
  • Secure Adjustable Fit: Separate ankle and upper tie fastenings allow operators to stabilize the overboot during movement.
  • Low Particle Contribution: CleanTough™ construction and published Helmke Drum data support selection for critical cleanroom environments.
  • Static-Dissipative Material: Provides documented electrostatic charge-decay performance for consideration in static-control programs.
  • Slip-Resistant Sole: Helps support controlled walking on compatible cleanroom floor surfaces.
  • Lightweight Construction: Reduces unnecessary garment bulk while providing additional lower-leg coverage.
  • Mechanical Strength: Manufacturer testing documents resistance to selected tears, punctures, and seam stresses.
  • Chemical-Resistance Data: Published liquid-repellence and permeation results support task-specific garment selection.
  • Universal Sizing: Simplifies inventory management where the selected overboot fits the operator's footwear appropriately.
  • Controlled Packaging: Sealed inner and outer polyethylene bags support protected storage and material staging.
  • Clear Procurement Quantity: Standard cases contain 150 individual overboots.
Common Applications:
  • Class 10 / ISO Class 4 cleanroom gowning
  • Pharmaceutical manufacturing and packaging support
  • Biotechnology manufacturing operations
  • Medical device manufacturing
  • Controlled laboratory and research operations
  • Cleanroom equipment maintenance and preparation
  • Footwear contamination management at controlled-area entrances
  • Handling compatible powders and solid materials
  • Selected blending and compounding support operations
  • Cleanroom cleaning and facility maintenance
  • Material movement between appropriately controlled areas
  • Operations requiring additional lower-leg garment coverage
  • Work requiring a low-linting outer footwear barrier
  • Controlled activities where non-sterile overboots are permitted by the facility SOP
Best-Practice Use:
  • Confirm Garment Requirements: Verify that non-sterile overboots are permitted in the intended work area.
  • Inspect Before Donning: Examine the sole, seams, upper material, and tie fastenings for damage.
  • Use the Gowning Boundary: Follow the approved step-over bench or controlled-area entry procedure.
  • Protect the Clean Side: Do not allow unprotected footwear to contact the clean-side floor during donning.
  • Handle Interior Surfaces: Minimize contact with the outer sole and exterior material.
  • Pull to Full Height: Extend the overboot upward to achieve the intended lower-leg coverage.
  • Secure the Ankle Tie: Fasten the ankle tie to stabilize the material around the footwear.
  • Secure the Upper Tie: Position the upper opening and secure the top tie according to the approved procedure.
  • Control Loose Material: Prevent folds and excess fabric from dragging on the floor or contacting moving equipment.
  • Check the Garment Interface: Verify overlap with the cleanroom coverall or other required leg protection.
  • Inspect During Movement: Confirm that the overboot remains secure while walking, reaching, and changing direction.
  • Watch for Floor Hazards: Follow cleanroom walking procedures and inspect the floor for conditions that could affect traction.
  • Replace Damaged Overboots: Change any overboot with tears, punctures, displaced ties, or unacceptable contamination.
  • Remove Carefully: Avoid handling contaminated soles or releasing trapped debris during doffing.
  • Dispose After Use: Follow the facility's applicable gowning and contamination-control waste procedures.
Controlled Gowning and Step-Over Boundary Procedures:

Cleanroom footwear control depends on preventing uncontrolled floor and footwear contact during the transition between less-clean and cleaner areas. Proper use of a step-over bench or designated gowning boundary reduces the likelihood of transferring particles into the controlled environment.

  1. Prepare: Complete required hand hygiene and preliminary gowning steps.
  2. Stage the Overboots: Place the required BDOB-L overboots within the approved gowning area.
  3. Maintain the Boundary: Sit on the step-over bench or follow the facility's approved boundary-crossing method.
  4. Don the First Overboot: Place one foot into the overboot without allowing uncovered footwear to contact the clean-side floor.
  5. Cross the First Foot: Move the protected foot to the designated clean side.
  6. Repeat for the Second Foot: Don the second overboot while maintaining appropriate separation of clean and less-clean surfaces.
  7. Extend the Material: Pull each overboot upward to achieve the intended 500 mm coverage.
  8. Fasten the Ankle: Secure the ankle tie without excessive tightening or loose trailing ends.
  9. Fasten the Upper Opening: Secure the top tie to maintain coverage and prevent sliding during movement.
  10. Verify the Interface: Confirm that the overboot and underlying coverall leg maintain the approved arrangement.
  11. Perform a Movement Check: Walk and turn carefully to confirm stable fit and appropriate sole contact.

Step-Over Boundary Guidance: The purpose of the gowning boundary is to prevent unprotected footwear and contaminated soles from entering the clean zone. Follow a controlled one-foot-at-a-time sequence, maintain clean and less-clean surface separation, and secure both ankle and upper ties before beginning routine operations.

Ankle and Upper Tie Fastening:

BDOB-L overboots use integral tie fastenings at the ankle and upper opening. These closures help maintain overboot placement and minimize movement of excess material around the footwear and lower leg.

  • Ankle Tie: Helps stabilize the overboot around the ankle and reduce loose material near the sole.
  • Upper Tie: Helps maintain the intended coverage along the lower leg.
  • Fastening Sequence: Establish the ankle fit first, then secure the upper opening unless the facility SOP specifies a different order.
  • Comfort: Avoid excessive tightening that restricts movement or creates uncomfortable pressure.
  • Loose Ends: Secure tie ends so they do not drag on floors or contact equipment.
  • Coverall Interface: Position the overboot and coverall leg according to the approved gowning procedure.
  • Movement: Confirm that ties remain stable during normal walking and work activity.
  • Garment Stress: Avoid pulling on tie connections hard enough to damage the material or seams.
  • Replacement: Remove overboots with broken ties or closures that cannot maintain the required fit.

Fit and Coverage Guidance: Secure the ankle and top ties to maintain stable coverage without distorting the protective material. The 500 mm design should remain extended over the required lower-leg area, with no loose folds contacting the floor or interfering with equipment.

ASTM F739-12 Chemotherapy Permeation Performance:

Ansell publishes chemotherapy-drug permeation results for BioClean-D BDOB-L material using ASTM F739-12. The values below are mean breakthrough times measured under controlled laboratory conditions using the stated permeation threshold.

Breakthrough Criterion: 0.1 µg/cm²/min.

Tested Chemotherapy Drug Mean Breakthrough Time
Cisplatin >240 minutes
Carmustine <6 minutes
Cyclophosphamide 217 minutes
Doxorubicin hydrochloride >240 minutes
5-Fluorouracil >240 minutes
Methotrexate >240 minutes
Etoposide >240 minutes
Paclitaxel <10 minutes
Thiotepa 30 minutes

The published results represent laboratory measurements for the tested material. Actual protection depends on the drug formulation, concentration, contact time, temperature, mechanical stress, seams, footwear interfaces, and the nature of the workplace exposure.

Drug-Specific Protection Guidance: BDOB-L material shows breakthrough below 6 minutes for carmustine, below 10 minutes for paclitaxel, and at a mean of 30 minutes for thiotepa under the reported ASTM F739-12 test conditions. These results are important when evaluating footwear protection for cytotoxic drug handling. Do not interpret laboratory breakthrough times as approved garment-wear durations or assume protection against untested drug formulations. Select the complete PPE system based on the facility's drug-specific hazard assessment.

Chemical Repellence and Material Protection:

Ansell reports liquid-repellence and penetration results for CleanTough™ material under defined test conditions. These laboratory results support chemical protection assessment but do not establish compatibility with every cleaning solution, solvent, or hazardous material.

Test Chemical Liquid Repellence Liquid Penetration
30% Sulfuric acid 96.3% 0%
10% Sodium hydroxide 97.6% 0%
o-Xylene 95.7% 0%
Butan-1-ol 96.6% 0%
  • Liquid Repellence: Describes resistance to wetting under the specified test procedure.
  • Liquid Penetration: Measures liquid passing through the material under the relevant laboratory method.
  • Permeation: Evaluates molecular transport through the material and is different from liquid repellence or penetration.
  • Footwear Interfaces: Liquid may enter through the top opening, seams, or other gaps even when the material resists penetration.
  • Actual Exposure: Chemical concentration, contact duration, pressure, temperature, and repeated contact can change protection.
  • Workplace Selection: Review the applicable material data, instructions for use, and chemical risk assessment.

Chemical Protection Guidance: Repellence and penetration tests do not establish universal chemical resistance or a safe exposure duration. For hazardous liquids, evaluate permeation, chemical concentration, contact time, seams, openings, and required protection for the underlying footwear and lower leg.

Antistatic and ESD Considerations:

BioClean-D BDOB-L uses antistatic, static-dissipative CleanTough™ material. Ansell reports an electrostatic charge half-decay time of 0.07 seconds for the material under the referenced test conditions.

  • Material Classification: Static-dissipative CleanTough™ laminate.
  • Published Charge Half-Decay: 0.07 seconds.
  • Relevant Standard: EN 1149-5.
  • Static-Safe Environments: Material performance supports evaluation for applications with electrostatic control requirements.
  • Footwear System: The overboot must be assessed together with the underlying footwear, floor, and personnel-grounding program.
  • Sole Behavior: Static-dissipative garment material does not independently establish the electrical resistance of the entire footwear assembly.
  • Grounding: Follow the required footwear, flooring, wrist-strap, and personnel-grounding procedures.
  • ESD Qualification: Validate the full system using the facility's applicable standards and measurements.
  • Movement: Consider charge generation from walking, fabric contact, and interactions with insulating surfaces.
  • Process Controls: Maintain required environmental conditions and grounding measures independently of garment material characteristics.

Electrostatic Control Guidance: The manufacturer's 0.07-second charge half-decay result describes CleanTough™ material performance, not a guarantee that a person wearing BDOB-L is electrically grounded. Confirm the complete footwear-and-flooring system meets the applicable electrostatic control requirements before use in ESD-sensitive operations.

Particle Shedding and Cleanroom Contamination Control:

Ansell publishes Helmke Drum particle-shedding results for BDOB-L material. Footwear contamination control also depends on gowning discipline, floor condition, walking behavior, overboot integrity, and correct removal procedures.

  • Cleanroom Classification: Class 10 / ISO 4.
  • Particle Shedding: Less than 2,000 counts/min for particles ≥0.5 µm.
  • Test Method: Helmke Drum Test.
  • Low-Linting Material: CleanTough™ construction supports reduced garment-origin particulate contribution.
  • Footwear Contact: The sole is exposed to controlled-area floors and should be treated as potentially contaminated after use.
  • Boundary Integrity: Avoid bringing contaminated footwear or exposed soles across cleanroom entry boundaries.
  • Garment Movement: Loose overboot material and repeated friction can contribute to particle release.
  • Tie Security: Correct upper and ankle fastening helps reduce unnecessary movement and material contact.
  • Floor Cleaning: Overboots supplement but do not replace cleanroom floor cleaning and environmental monitoring.
  • Doffing: Remove contaminated overboots slowly to reduce particle dispersal.
  • Facility Qualification: Confirm the product meets the site's contamination-control and gowning expectations.
Non-Sterile BDOB-L vs. Sterile S-BDOB-L:

Ansell offers separate non-sterile and sterile longer-length BioClean-D overboots. Both are designed for critical cleanroom applications, but they differ in supplied sterility, processing documentation, and packaging quantity.

Feature BDOB-L S-BDOB-L
Supplied Sterility Non-sterile Sterile
Manufacturer SKU BDOB-L S-BDOB-L
Length 500 mm Longer-length model
Size Universal Universal
Case Quantity 150 individual overboots 75 pairs (150 individual overboots)
Published Shelf Life 5 years 3 years
Typical Selection Qualified non-sterile cleanroom gowning Approved gowning requiring sterile footwear covers

The sterile configuration should be selected when the applicable contamination-control strategy or aseptic gowning procedure requires documented sterile protective footwear.

Sterility Selection Guidance: BDOB-L is supplied non-sterile and is not interchangeable with S-BDOB-L when sterile footwear protection is required. The sterile model has separate packaging and processing documentation. Confirm the exact product code and purchasing unit before ordering for a sterile gowning program.

Material and Mechanical Performance:

CleanTough™ material and BDOB-L seam construction have been evaluated using manufacturer-referenced mechanical performance methods. These properties help assess suitability for routine cleanroom movement and specified protective applications.

  • Material: Polyethylene / nonwoven polypropylene laminate.
  • Bound Seams: Single-needle stitched construction.
  • Seam Strength: 70 N.
  • Puncture Resistance: 8 N.
  • Tear Resistance, Cross Direction: 29.3 N.
  • Tear Resistance, Machine Direction: 55.5 N.
  • Tensile Strength, Cross Direction: 48 N.
  • Tensile Strength, Machine Direction: 97 N.
  • Flex Cracking Resistance: 5,000-15,000 cycles under the published test conditions.
  • Abrasion Resistance: 10-100 cycles under the published test method.
  • Slip-Resistant Sole: Designed to improve traction on compatible floor surfaces.
  • Wear Inspection: Check seams, soles, and tie attachments during use.
  • Single Use: Dispose of after the approved use period rather than laundering or reusing.
Controlled Doffing and Disposal:

Overboots can accumulate particles, chemical residues, and other contamination on the sole and lower exterior surfaces. Removal should be performed using the facility's defined doffing area and approved contamination-control procedure.

  • Use the Correct Exit Area: Remove overboots at the designated cleanroom exit or gowning boundary.
  • Control Exterior Contact: Avoid touching the contaminated sole or outer material with unprotected hands.
  • Release the Upper Tie: Loosen the top tie without shaking the overboot.
  • Release the Ankle Tie: Loosen the ankle tie while maintaining control of the material.
  • Remove Slowly: Pull the overboot away from the leg using controlled movements.
  • Contain Contamination: Turn the material inward as appropriate to the facility doffing procedure.
  • Maintain Boundary Separation: Do not place contaminated soles on the clean side during removal.
  • Dispose in Approved Waste: Follow the required contamination-control or hazardous-chemical waste classification.
  • Complete Hand Hygiene: Follow the site requirements after removal of contaminated protective clothing.
  • Replace for Reentry: Use new overboots when required before crossing into the cleanroom again.

Doffing Guidance: Treat used overboot soles and lower exterior material as potentially contaminated. Remove slowly without shaking, keep contaminated surfaces away from clean garments, and follow the designated cleanroom exit sequence and waste procedure.

Packaging and Storage Recommendations:
  • Manufacturer SKU: BDOB-L
  • Available Size: Universal
  • Individual Packaging Count: 30 overboots per sealed inner polyethylene bag
  • Outer Packaging: One inner bag per sealed outer polyethylene bag
  • Shipping Carton: Five outer bags per lined carton
  • Case Quantity: 150 individual overboots
  • Supplied Sterility: Non-sterile
  • Published Shelf Life: Five years from date of manufacture
  • Expiration: Follow the manufacturer's actual labeled expiration information
  • Storage: Keep dry and in original protective packaging
  • Sunlight: Protect from direct sunlight
  • Ozone: Avoid storage near ozone-generating equipment
  • Physical Protection: Prevent crushing, tearing, punctures, and damaged tie fastenings
  • Opened Packaging: Protect unused overboots according to approved controlled-area storage procedures
  • Material Transfer: Follow approved procedures for removing external packaging before cleanroom introduction
  • Single Use: Do not launder or reuse after the designated operation
  • Disposal: Follow applicable facility waste-management procedures, including hazardous-chemical controls where necessary
Manufacturer Technical Documents:

Ansell BioClean-D BDOB-L Manufacturer Product Information: Click Here

Ansell BioClean-D BDOB-L U.S. Technical Data Sheet - Specifications, Particle Performance, Electrostatic Data and ASTM F739-12 Results (PDF): Click Here

Ansell BioClean-D BDOB-L Instructions for Use and Chemical Protective Clothing Documentation: View Manufacturer Downloads

Ansell BioClean-D CleanTough Material and Declaration of Conformity Resources: View Manufacturer Resources

SOSCleanroom BioClean-D BDOB-L Product Information: Click Here

Other Similar Products Available From SOSCleanroom.com

Longer-Length Cleanroom Overboots

Notes: Need assistance selecting longer-length cleanroom overboots, comparing sterile and non-sterile footwear protection, or reviewing chemotherapy permeation and static-dissipative performance? Open the SOSCleanroom Technical Vault tab above for additional guidance on cleanroom footwear selection, step-over boundary gowning, ankle and upper tie fastening, chemical protection, electrostatic control, and contamination management.

SOSCleanroom.com supports pharmaceutical, biotechnology, medical device, laboratory, semiconductor, and other critical environments with cleanroom overboots, protective apparel, sterile garments, gloves, and contamination-control supplies. Our team provides manufacturer documentation, product-selection assistance, packaging information, and procurement support.

Product description updated: October 23, 2026 (SOS Technical Staff)

© 2026 SOS Supply. All rights reserved.

The Technical Vault By SOSCleanroom
Class 10 / ISO 4 Nonsterile 500 mm Longer Length CleanTough™ Laminate Static-Dissipative Material Slip-Resistant Sole 150 Pieces / Case

Ansell BioClean-D™ BDOB-L: longer-length cleanroom overboots for contamination control, lower-leg coverage, and secure footwear containment

Ansell BioClean-D™ BDOB-L Longer-Length Cleanroom Overboots are nonsterile, disposable protective overboots designed to provide extended footwear and lower-leg coverage in contamination-sensitive manufacturing and controlled environments.

With a height of 500 mm (approximately 19.7 inches), these overboots provide additional lower-leg protection compared with shorter cleanroom boot covers. The lightweight, low-linting CleanTough™ polyethylene/nonwoven polypropylene laminate helps limit contamination introduced by protective apparel during cleanroom operations.

BDOB-L incorporates integral tie fastenings at the top and ankle, bound seams with single-needle stitching, and a slip-resistant polyethylene/polypropylene sole. The design supports adjustable coverage over compatible cleanroom footwear and garments while allowing controlled movement throughout the work area.

Ansell identifies BDOB-L for Class 10 / ISO Class 4 cleanroom applications. The product is supplied nonsterile, in a universal size, with 150 individual overboots per case.

Operations takeaway: BDOB-L combines 500 mm lower-leg coverage, low-linting material, static-dissipative fabric, two-position ties, and a slip-resistant sole. Effective performance depends on correct gowning, suitable footwear, secure tie placement, controlled cleanroom entry, and appropriate replacement after contamination or damage.


ISO-first context: lower-body contamination control in cleanrooms

ISO 14644-5:2025 addresses cleanroom operations through a documented Operations Control Programme covering personnel, protective clothing, material transfer, cleaning, equipment, maintenance, and contamination prevention.

Footwear and lower garments can transport particles and other contaminants between areas as personnel walk, move equipment, and cross controlled-area boundaries. Protective overboots help support a facility's gowning and contamination-control strategy by covering compatible footwear and lower-leg garments.

BioClean-D™ BDOB-L is specified for Class 10 / ISO Class 4 environments. The correct gowning procedure must also account for sterility requirements, floor conditions, approved footwear, protective garments, traffic flow, and environmental monitoring.

Control point: ISO Class 4 suitability is not the same as sterile supply. BDOB-L is a nonsterile cleanroom overboot and should be used only where the facility's contamination-control program permits nonsterile protective footwear.


Specifications (SKU controls for RFQs, SOPs, and receiving)
  • Product: Ansell BioClean-D™ Longer-Length Disposable Overboots
  • Manufacturer: Ansell
  • Manufacturer part number: BDOB-L
  • Product family: BioClean-D™
  • Product type: Disposable cleanroom overboots
  • Sterility: Nonsterile
  • Cleanroom classification: Class 10 / ISO Class 4
  • Size: Universal
  • Color: White
  • Overall height: 500 mm (approximately 19.7 inches)
  • Primary material: Polyethylene/nonwoven polypropylene laminate
  • Material technology: CleanTough™
  • Natural rubber latex: Not present
  • Seam construction: Bound seams with single-needle stitching
  • Sole material: PE/PP
  • Sole characteristic: Slip-resistant
  • Upper closure: Integral tie fastening
  • Ankle closure: Integral tie fastening
  • Elasticated ankle: No
  • Particle shedding: Less than 2,000 counts/min for particles ≥0.5 µm
  • Particle testing: Helmke Drum Test
  • Electrostatic performance: Static-dissipative CleanTough™ material
  • Published charge half-decay time: 0.07 seconds
  • Chemical permeation testing: ASTM F739-12
  • PPE category: Category III
  • Protective clothing designation: Partial-body protection
  • Applicable standards: EN 13034, EN 1149-5, EN ISO 13688, and additional manufacturer-listed test methods
  • Published shelf life: Five years from manufacture
  • Country of origin: China
  • Inner packaging: 30 individual overboots per sealed PE bag
  • Outer packaging: One inner bag per sealed outer PE bag
  • Case packaging: Five outer bags per lined carton
  • Total case quantity: 150 individual overboots
  • Unit of measure: Case of 150 pieces

Ordering control: BDOB-L is supplied as 150 individual overboots per case, equivalent to 75 pairs if used two at a time. The manufacturer's official packaging quantity is stated in individual pieces. Confirm the complete BDOB-L part number before ordering.


500 mm extended length: why lower-leg coverage matters

At approximately 19.7 inches high, BDOB-L provides more lower-leg coverage than conventional short shoe covers or standard-length overboots.

  • Extended height: Covers compatible footwear and a greater portion of the lower leg.
  • Garment overlap: Supports integration with suitable cleanroom coverall legs.
  • Equipment access: Provides additional coverage during approved activities involving low-positioned equipment.
  • Floor-level operations: Helps manage contamination risks when personnel perform tasks close to floor surfaces.
  • Material handling: Supports protective apparel coverage while handling compatible containers and manufacturing materials.
  • Adjustable ties: Help retain positioning during movement.
  • Coverage verification: Confirm that no unacceptable gaps appear while walking, crouching, or bending.

Coverage distinction: The longer height increases the area covered but does not create a fully sealed chemical boot or replace specialized footwear when immersion, heavy liquid splash, impact, or puncture protection is required.


CleanTough™ laminate: construction and protective characteristics
  • Polyethylene laminate: Contributes to the protective material barrier.
  • Nonwoven polypropylene: Forms part of the lightweight protective fabric construction.
  • Low-linting characteristics: Support contamination-sensitive manufacturing applications.
  • White material: Supports visibility of the garment and its condition during inspection.
  • Bound seams: Provide joined fabric construction with single-needle stitching.
  • Static-dissipative characteristics: Support evaluation for approved static-controlled environments.
  • Disposable design: Allows removal and replacement when contaminated or physically compromised.
  • Flexible construction: Supports movement over compatible footwear and protective garments.

Material performance: Low-linting construction and chemical barrier properties should be evaluated together with seams, closures, fit, and the intended exposure. Fabric test results are not necessarily representative of every garment interface.


Slip-resistant sole and safe cleanroom movement

BDOB-L features a slip-resistant polyethylene/polypropylene sole designed to provide added traction when used with compatible cleanroom footwear.

  • Sole composition: Polyethylene/polypropylene.
  • Slip-resistant design: Provides a manufacturer-designated traction feature.
  • Footwear compatibility: Evaluate fit over the actual work shoe or cleanroom footwear.
  • Floor compatibility: Assess traction on the facility's flooring materials.
  • Wet floors: Use caution during cleaning and operations involving liquids.
  • Movement testing: Confirm that the overboot does not twist, bunch, or move excessively during walking.
  • Sole inspection: Check for tears, excessive wear, contamination, or loss of suitable traction.
  • Replacement: Change the overboot if safe footing is compromised.

Slip-resistance distinction: A slip-resistant sole does not eliminate slip hazards. Actual traction depends on footwear, floor finish, moisture, cleaning chemistry, contamination, and operator movement.


Two-position tie fastenings: securing the ankle and upper leg

The BDOB-L design includes integral ties at the ankle and top opening rather than relying on an elasticated ankle closure.

  • Ankle ties: Help position the overboot around the footwear and lower leg.
  • Upper ties: Help retain the extended garment around the leg.
  • Adjustment: Allows fit to be adapted to compatible footwear and cleanroom clothing.
  • Movement: Proper positioning helps reduce shifting and loose excess material.
  • Garment overlap: Supports the intended interface with the cleanroom coverall.
  • Pressure control: Avoid fastening ties so tightly that they restrict movement or cause discomfort.
  • Loose ends: Secure tie ends according to the gowning procedure to minimize snagging or floor contact.

Fastening control: The ankle and upper ties serve different positioning functions. Both should be secured under the approved gowning procedure, with sufficient overlap and without loose material that could create a snagging or trip hazard.


Static-dissipative properties and ESD considerations

Ansell's BDOB-L technical data describes CleanTough™ material as static dissipative, reporting an electrostatic charge half-decay time of 0.07 seconds under the stated test conditions.

  • Material characteristic: Static dissipative.
  • Published charge half-decay time: 0.07 seconds.
  • Manufacturer standard reference: EN 1149-5.
  • ESD applications: Suitable for evaluation where electrostatic behavior is an important contamination or product-protection consideration.
  • Complete footwear system: Consider the underlying shoe, floor, overboot sole, and personnel grounding arrangement.
  • Electrical continuity: Do not assume the overboot alone establishes a verified grounding path.
  • System qualification: Follow the facility's approved ESD or static-control testing requirements.

ESD distinction: Static-dissipative material performance does not independently establish compliance of the complete footwear and flooring system with ANSI/ESD S20.20 or other applicable electrostatic-control requirements. Verify the entire system for the intended process.


Particle shedding: interpreting the Helmke Drum result

Ansell reports a Helmke Drum particle-shedding result for BDOB-L of fewer than 2,000 counts per minute at particle sizes ≥0.5 µm.

  • Published result: Less than 2,000 counts/min.
  • Particle size threshold: ≥0.5 µm.
  • Test method: Helmke Drum Test.
  • Purpose: Characterizes particle shedding under a specified laboratory procedure.
  • Garment handling: Avoid unnecessary shaking, snapping, dragging, or abrasive contact.
  • Inspection: Replace overboots showing wear or damage that could affect cleanliness.
  • Process qualification: Evaluate actual personnel particle contribution under the facility's gowning and operational conditions.

Particle-data interpretation: Helmke Drum results are reported in counts per minute, not particles per square centimeter or airborne particles per cubic meter. The test result does not independently determine the cleanroom classification of the operating environment.


Chemical resistance and liquid-splash performance

Ansell publishes standardized liquid repellence, penetration, and mechanical test results for the BDOB-L CleanTough™ fabric.

  • 30% sulfuric acid repellence: 96.3% under the reported test conditions.
  • 10% sodium hydroxide repellence: 97.6% under the reported test conditions.
  • o-Xylene repellence: 95.7% under the reported test conditions.
  • Butan-1-ol repellence: 96.6% under the reported test conditions.
  • Liquid penetration: Reported as 0% in the applicable standardized tests for the four listed challenge liquids.
  • Spray test: Pass.
  • Fine-particle inward leakage: Pass under the reported test conditions.
  • Seam strength: 70 N in the manufacturer test data.
  • Chemical protection classification: Category III, partial-body protection under the applicable product standards.
  • Task qualification: Verify the actual chemical, concentration, exposure duration, temperature, and potential contact with openings or seams.

Chemical barrier distinction: Liquid repellence and penetration testing do not mean the overboot is impervious to every chemical or suitable for immersion. The garment's stitched seams, openings, ties, and other interfaces require separate consideration when evaluating liquid exposure.


Chemotherapy-drug permeation: drug-specific breakthrough limits

Ansell provides ASTM F739-12 chemotherapy-drug permeation results for BDOB-L fabric. These results demonstrate why chemical protection must be evaluated for the exact medication rather than assumed from a general product classification.

  • Cisplatin: Mean breakthrough time greater than 240 minutes.
  • Carmustine: Mean breakthrough time less than 6 minutes.
  • Cyclophosphamide: Mean breakthrough time 217 minutes.
  • Doxorubicin hydrochloride: Mean breakthrough time greater than 240 minutes.
  • 5-Fluorouracil: Mean breakthrough time greater than 240 minutes.
  • Methotrexate: Mean breakthrough time greater than 240 minutes.
  • Etoposide: Mean breakthrough time greater than 240 minutes.
  • Paclitaxel: Mean breakthrough time less than 10 minutes.
  • Thiotepa: Mean breakthrough time 30 minutes.
  • Test method: ASTM F739-12.
  • Reported breakthrough endpoint: 0.1 µg/cm²/min.

Critical chemotherapy distinction: BDOB-L should not be treated as a universal chemotherapy protective barrier. The reported breakthrough times of less than six minutes for carmustine and less than ten minutes for paclitaxel demonstrate substantial differences between tested drugs.

Fabric versus complete garment: Chemical permeation results describe the tested material under laboratory conditions. Stitched seams, ties, and openings may provide different protection. Breakthrough time is not an automatic safe-wear interval. Consult the applicable current Ansell data and facility hazardous-drug PPE assessment before use.


Nonsterile BDOB-L versus sterile S-BDOB-L

Ansell offers separate nonsterile and sterile configurations in the BioClean-D™ longer-length overboot family. The two products have different ordering codes, packaging, and shelf-life requirements.

  • BDOB-L: Nonsterile longer-length overboot.
  • BDOB-L height: 500 mm.
  • BDOB-L packaging: 150 individual overboots per case.
  • BDOB-L shelf life: Five years.
  • S-BDOB-L: Separate sterile longer-length configuration.
  • S-BDOB-L packaging: 75 pairs per case, with individually packaged pairs.
  • S-BDOB-L shelf life: Three years under manufacturer-stated storage conditions.
  • Sterility: The sterile version is supplied under the applicable validated irradiation and packaging process.
  • Material transfer: Sterile and nonsterile configurations require different receiving, transfer, and gowning controls.
  • Substitution: Do not substitute BDOB-L for S-BDOB-L where sterile supply is required.

Product selection: BDOB-L is nonsterile and packaged as 150 individual pieces. The separate S-BDOB-L sterile longer-length overboot is packaged as 75 pairs. Confirm the exact model and packaging configuration before ordering.


Step-over boundary gowning: preventing footwear cross-contamination

Cleanroom entry may involve a step-over bench, marked floor boundary, or other controlled transition that separates less-clean and cleaner areas. Protective overboots should be applied according to the facility's approved gowning sequence.

  1. Confirm the approved product: Verify BDOB-L and the required nonsterile application.
  2. Inspect the packaging: Confirm the correct part number and acceptable package condition.
  3. Prepare footwear: Follow the facility's cleaning or gowning requirements for the underlying shoe.
  4. Position at the boundary: Use the approved step-over bench or controlled transition area.
  5. Apply the first overboot: Cover the footwear without allowing clean garment surfaces to contact uncontrolled floor areas.
  6. Secure the ankle tie: Position the lower portion correctly around the shoe and ankle.
  7. Extend the garment: Pull the 500 mm overboot into the approved lower-leg position.
  8. Secure the upper tie: Maintain coverage without restricting circulation or movement.
  9. Cross the boundary: Transfer the protected foot into the cleaner zone using the approved procedure.
  10. Repeat for the second foot: Maintain the same clean-to-dirty separation discipline.
  11. Verify final coverage: Check the sole, ties, lower-leg coverage, and overlap with cleanroom apparel.
  12. Perform a movement check: Confirm that walking and bending do not displace the overboots.

Gowning control: The exact order of shoes, coverall legs, overboots, and gloves should follow the facility's gowning SOP. A step-over boundary helps prevent the protected footwear from returning to an uncontrolled floor surface after donning.


Top and ankle tie sequence: maintaining fit and coverage
  • Position the foot: Ensure the overboot sole sits beneath the shoe correctly.
  • Adjust the ankle: Remove excessive loose material without restricting normal movement.
  • Tie securely: Use the approved knot or fastening technique.
  • Extend the upper section: Pull the garment upward to achieve the intended lower-leg coverage.
  • Secure the upper tie: Position it to maintain the correct overlap with the coverall.
  • Control tie ends: Avoid long loose ends that could drag, snag, or interfere with equipment.
  • Check walking stability: Verify that the garment does not twist around the footwear.
  • Confirm comfort: Avoid excessive pressure around the ankle and upper leg.
  • Inspect periodically: Replace if ties break or the overboot repeatedly slips out of position.

Fit principle: The ankle and upper ties provide two points of adjustment. Both should be used correctly to help maintain stable positioning and reduce loose material during normal cleanroom movement.


Footwear and coverall integration
  • Underlying footwear: Use shoes or cleanroom footwear approved for the environment.
  • Coverall overlap: Maintain the required relationship between the coverall leg and overboot opening.
  • Universal fit: Evaluate compatibility with the actual shoe size and garment arrangement.
  • Sole placement: Confirm that the slip-resistant sole is centered beneath the shoe.
  • Upper-leg coverage: Check that the extended section remains properly positioned.
  • Walking movements: Confirm that the overboot does not slide or twist.
  • Bending and crouching: Verify that the coverall-to-overboot interface maintains appropriate coverage.
  • Inspection: Check the complete lower-body apparel system before entering the work area.

System compatibility: Proper lower-body gowning depends on the combined footwear, coverall, overboot, and floor arrangement. An extended overboot cannot compensate for incompatible footwear or an improperly fitted protective garment.


What BDOB-L is designed to do (typical use cases)
  • Nonsterile protective footwear coverage in approved ISO Class 4 cleanroom operations
  • Pharmaceutical manufacturing support activities
  • Biotechnology manufacturing and blending operations
  • Medical device manufacturing
  • Controlled laboratory and research environments
  • Cleanroom equipment cleaning and preparation
  • Handling compatible powders and active materials
  • Controlled material transfer and equipment maintenance
  • Manufacturing tasks requiring extended lower-leg coverage
  • Operations where lightweight, low-linting protective footwear is needed
  • Facilities requiring static-dissipative apparel materials
  • Approved limited liquid-splash procedures where chemical compatibility is established

Application selection: Select BDOB-L according to the cleanroom classification, nonsterile gowning requirements, footwear compatibility, traction conditions, and any chemical or electrostatic hazards. Verify the intended PPE performance for the complete task.


Best-practice use: inspection, wear, and controlled removal
  1. Verify product identity: Confirm BDOB-L, universal size, and nonsterile status.
  2. Inspect the material: Check for tears, holes, damaged stitching, or visible contamination.
  3. Inspect the sole: Confirm acceptable traction and physical integrity.
  4. Use the approved gowning sequence: Follow the facility's controlled entry procedure.
  5. Position the footwear: Confirm the overboot fully covers the shoe as intended.
  6. Secure both ties: Fasten the ankle and upper tie correctly.
  7. Check garment overlap: Ensure the lower-leg interface meets the gowning procedure.
  8. Confirm fit: Walk and bend carefully to check stable placement.
  9. Maintain contamination discipline: Avoid touching clean surfaces after handling the overboot or floor.
  10. Monitor condition: Watch for sole damage, slipping, untied closures, or unacceptable contamination.
  11. Replace when necessary: Remove the overboot after damage, contamination, or the applicable change-out interval.
  12. Doff in the approved area: Avoid contacting underlying clothing or transferring floor contamination.
  13. Dispose appropriately: Follow the waste procedure for the actual substances and environments involved.

Method standardization tip: Document the overboot model, nonsterile status, step-over gowning sequence, tie-fastening method, footwear requirements, inspection criteria, and replacement triggers in the facility SOP.


Packaging hierarchy: 150 individual overboots per case
  • Manufacturer reorder code: BDOB-L.
  • Product size: Universal.
  • Inner bag: 30 individual overboots.
  • Inner bag material: Polyethylene.
  • Outer bag: One sealed inner bag per sealed outer polyethylene bag.
  • Outer bags per carton: Five.
  • Case quantity: 150 individual overboots.
  • Equivalent two-foot sets: 75 sets when two individual overboots are used.
  • Sterility: Nonsterile.
  • Packaging transfer: Follow the facility's approved material-entry procedure.
  • Receiving: Verify manufacturer SKU, quantity, package condition, and lot information.

Unit-of-measure control: Ansell's published BDOB-L quantity is 150 pieces per case. For purchasing and inventory records, retain the manufacturer's individual-piece quantity rather than labeling the case as 150 pairs.


Five-year shelf life, storage, and lot traceability
  • Published shelf life: Five years from date of manufacture.
  • Actual expiration: Verify labeled lot-specific information when provided.
  • Original packaging: Retain until approved use or material transfer.
  • Dry storage: Store in a dry environment.
  • Direct sunlight: Protect from exposure.
  • Ozone: Keep away from ozone-generating sources.
  • Mechanical damage: Protect from crushing, tearing, punctures, and abrasive contact.
  • Inventory rotation: Follow the applicable first-expiring-first-out procedure.
  • Packaging inspection: Check for damage before dispensing.
  • Lot records: Maintain traceability under the facility's quality system.
  • Reuse: Follow manufacturer single-use instructions rather than assuming the overboots can be laundered or reprocessed.

Shelf-life distinction: The published five-year shelf life is associated with BDOB-L under the specified storage conditions. It does not mean five years remain at the time of delivery. Confirm the actual manufacturing and expiration information for each shipment.


Common overboot failure modes and prevention
  • Loose ankle tie: Secure the lower tie according to the gowning procedure.
  • Loose upper tie: Maintain the intended leg coverage without creating excess slack.
  • Overboot twisting: Confirm appropriate positioning over the footwear.
  • Sole wear: Replace when the sole is torn or traction is compromised.
  • Seam damage: Inspect bound and stitched areas before use.
  • Excessive material contact: Avoid dragging fabric along the floor or equipment.
  • Contamination transfer: Use the required step-over boundary method.
  • Incorrect sterile substitution: Do not confuse nonsterile BDOB-L with sterile S-BDOB-L.
  • Unqualified chemical exposure: Review the actual chemical and garment test data.
  • Incorrect ESD assumptions: Qualify the complete footwear and flooring system.
  • Improper doffing: Avoid touching underlying garments with contaminated outer surfaces.

Misuse controls & when not to use BDOB-L
  • If sterile overboots are required: Select the appropriate sterile product configuration.
  • If hazardous-drug protection is required: Evaluate drug-specific breakthrough data and the complete PPE arrangement.
  • If carmustine or paclitaxel exposure is foreseeable: Do not assume suitable protection from BDOB-L based on its general chemical-protection classification.
  • If chemical immersion is expected: Use properly qualified chemical-resistant boots or other suitable equipment.
  • If sharp objects are present: Select footwear offering the required puncture protection.
  • If heavy impact hazards exist: Use appropriately rated protective footwear.
  • If a verified ESD grounding path is required: Qualify the footwear, flooring, and complete apparel system.
  • If the sole is damaged or slippery: Replace the affected overboot.
  • If seams or ties are broken: Do not continue using a compromised garment.
  • If contamination occurs: Follow the applicable change-out and disposal procedure.
  • If reusable footwear is specified: Do not assume the disposable BDOB-L provides equivalent durability or reprocessing performance.

BDOB-L versus shorter overboots and sterile alternatives

Different BioClean-D™ overboot configurations provide distinct coverage, packaging, and sterile-processing options.

  • BioClean-D™ BDOB-L: Longer-length 500 mm, nonsterile overboot with two tie positions and slip-resistant sole.
  • BioClean-D™ BDOB: Standard-length nonsterile overboot configuration with a different upper closure design.
  • BioClean-D™ S-BDOB-L: Sterile 500 mm longer-length version supplied under a separate manufacturer part number.
  • BioClean-D™ S-BDOB: Sterile standard-length overboot alternative.
  • Disposable overshoes: Provide more limited shoe coverage and may not meet a requirement for extended lower-leg protection.
  • Reusable cleanroom footwear: May be selected for facilities using approved reusable footwear-cleaning and reprocessing systems.
  • Selection criteria: Consider required height, sterility, packaging, tie configuration, sole traction, chemical resistance, and cleanroom suitability.

Selection principle: A longer overboot, standard-height overboot, sterile overboot, and disposable shoe cover should not be treated as interchangeable. Select the exact model that meets the facility's environmental, gowning, and hazard-control requirements.


Recommended related cleanroom consumables

System compatibility: Cleanroom footwear, overboots, coveralls, gloves, and related PPE should be selected as a complete system. Matching ISO classifications alone does not establish equivalent sterile condition, chemical barrier performance, grounding, or traction.


Why purchase Ansell BioClean-D™ BDOB-L from SOSCleanroom
  • Exact manufacturer product identification: SOSCleanroom supports purchasing BDOB-L by its specified manufacturer model and universal-size configuration.
  • Correct unit of measure: Standardizing the 150-individual-piece case quantity helps reduce purchasing and inventory errors.
  • Cleanroom-focused procurement: Coordinate overboots with compatible cleanroom apparel, gloves, and contamination-control consumables.
  • Technical product resources: Manufacturer documentation supports evaluation of particle shedding, material construction, chemical test data, and packaging requirements.
  • Repeat-order consistency: Ordering by exact manufacturer code helps prevent unintended substitutions between sterile and nonsterile configurations.
  • Customer support: Contact SOSCleanroom for current availability, manufacturer documentation, and purchasing assistance.

Manufacturer documentation (authoritative references)
  • SOSCleanroom BDOB-L product page: Click Here
  • Ansell BioClean-D™ BDOB-L official U.S. product information: Click Here
  • Ansell BioClean-D™ BDOB-L U.S. Technical Data Sheet: Click Here
  • Ansell BioClean-D™ BDOB-L Instructions for Use and conformity documents: Click Here
  • Ansell BioClean-D™ Standard-Length Nonsterile Overboots: Click Here
  • Ansell BioClean-D™ Sterile Overboots: Click Here
  • ISO 14644-5:2025 Cleanroom Operations Standard: Click Here
  • OSHA Foot Protection Standard — 29 CFR 1910.136: Click Here

Technical documentation: The Ansell BDOB-L technical data identifies the product as a 500 mm, nonsterile, Class 10 / ISO 4 overboot with static-dissipative material characteristics, a slip-resistant sole, and 150 individual pieces per case. Drug-specific ASTM F739-12 results demonstrate different permeation performance across tested substances. Use current manufacturer information and the facility's approved gowning, chemical protection, and receiving procedures when qualifying BDOB-L for use.


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