Micronova NovaCel Solid PVA Cleanroom Sponge - SP4-533 - Ultra-Absorbent - 24 Sponges/Case
Micronova NovaCel™ SP4-533 is an ultra-absorbent, solid white PVA cleanroom sponge designed for precision cleaning, liquid pickup, equipment maintenance, and wafer lapping and polishing support. Its specialized sponge construction provides exceptional water absorption while becoming soft and pliable when hydrated, making it useful for controlled cleaning of compatible surfaces, delicate components, small parts, and equipment features.
Unlike conventional abrasive cleaning pads, NovaCel is firm when dry and softens significantly after wet conditioning. This behavior allows the sponge to conform to suitable surface contours and equipment features while retaining liquids, rinse water, and process residues. Micronova states that NovaCel can absorb up to 25 times its own weight in water, making it especially useful for high-liquid-pickup applications and controlled wet cleaning.
Manufactured at Micronova's Torrance, California facility, SP4-533 is intended for ISO Class 5 through ISO Class 9 controlled environments. The sponge is individually bagged, autoclavable, and supplied non-irradiated in cases of 24 sponges.
Ultra-Absorbent Cleaning Advantage: NovaCel combines high water retention with a soft, hydrated contact surface for cleaning sensitive equipment and precision components. Its ability to absorb up to 25 times its weight in water supports controlled pickup of rinses, polishing slurries, and compatible cleaning solutions while reducing the need for repeated wiping with lower-capacity materials.
Specifications:
- Manufacturer: Micronova Manufacturing, Inc.
- Manufacturer Part Number: SP4-533
- SOSCleanroom SKU: SP4-533
- Product Family: NovaCel™
- Product Name: NovaCel Solid PVA Cleanroom Sponge
- Product Type: Ultra-Absorbent Cleanroom Sponge
- Material: Solid white PVA sponge
- Construction: Solid sponge material
- Color: White
- Nominal Sponge Length: 5 inches (12.7 cm)
- Nominal Sponge Width: 3.3 inches (8.4 cm)
- Nominal Sponge Thickness: 0.33 inches (0.84 cm), per manufacturer SP4-533 product specification
- Water Absorbency: Up to 25 times its dry weight, according to manufacturer product literature
- Dry-State Characteristics: Firm to the touch
- Hydrated Characteristics: Soft, pliable, and conformable
- Intended Cleaning Method: Controlled wet cleaning, liquid pickup, rinsing, and surface wiping
- Cleanroom Applications: ISO Class 5 through ISO Class 9 controlled environments, subject to facility qualification
- Chemical Compatibility: Manufacturer identifies compatibility with common disinfectants and cleaning solutions
- Autoclave Compatibility: Autoclavable
- Irradiation: Not irradiated
- Sterility: Non-sterile as supplied
- Packaging: Individually bagged
- Case Quantity: 24 individually bagged sponges
- Ordering Configuration: Case of 24 sponges
- Traceability: Manufacturer lot numbers printed on each individual bag and case
- Certificate of Conformance: Available from Micronova
- Manufacturing Location: Torrance, California, USA
- Manufacturing Quality System: ISO 9001 certified facility
- Manufacturer Specification: SP4-533 NovaCel Sponge, Revision 001
About the Manufacturer:
Micronova Manufacturing develops specialized contamination-control products for pharmaceutical manufacturing, biotechnology, semiconductor fabrication, medical device production, laboratories, and other controlled environments. Its product portfolio includes cleanroom sponges, wipers, mopping systems, cleaning tools, detergents, and specialized cleaning accessories.
The NovaCel™ product family is designed for applications requiring substantial liquid absorption, soft wetted contact, and controlled cleaning performance. Its sponge and wipe configurations support precision cleaning, general equipment maintenance, and wafer manufacturing processes where liquid retention and gentle surface contact are important.
SOSCleanroom has supplied Micronova contamination-control products for more than 15 years. Our team assists customers with product selection, manufacturer technical documents, cleanroom cleaning procedures, packaging configurations, and procurement support.
NovaCel Sponge Features:
- Solid white PVA sponge construction
- Ultra-high water absorbency, up to 25 times the sponge's dry weight
- Firm when dry and soft when hydrated
- Conformable wetted surface for controlled cleaning
- Suitable for precision equipment and small-part cleaning
- Useful for wafer lapping and polishing support operations
- Designed for liquid pickup and slurry removal
- Broad manufacturer-described chemical compatibility
- Compatible with many common cleaning and disinfecting solutions, subject to process qualification
- Autoclavable material construction
- Designed for ISO Class 5 through ISO Class 9 environments
- Manufactured at an ISO 9001 certified facility
- Non-irradiated product configuration
- Individually bagged sponge presentation
- Lot identification on each sponge bag and case
- 24 individually bagged sponges per case
NovaCel Sponge Benefits:
- Exceptional Liquid Pickup: High water absorption capacity supports efficient removal of rinses, cleaning fluids, and compatible water-based residues.
- Gentle Wetted Contact: Hydration softens the sponge and allows it to conform to suitable surfaces and equipment contours.
- Precision Cleaning Support: Suitable for localized cleaning where a soft sponge is preferred over aggressive abrasive materials.
- Wafer Processing Applications: Useful in approved lapping and polishing support procedures requiring slurry or rinse-liquid pickup.
- Reduced Dripping: High liquid retention can help control liquid movement when the sponge is properly conditioned and not overloaded.
- Surface Conformity: A hydrated sponge can contact corners, edges, and irregular surfaces more effectively than some rigid cleaning tools.
- Chemical Versatility: Manufacturer-described compatibility with common cleaners and disinfectants supports a range of qualified cleaning procedures.
- Steam Processing Capability: Autoclavable construction allows evaluation for facilities using qualified steam-processing procedures.
- Individually Protected Units: Separate bags help control handling and material staging.
- Lot Traceability: Identification on each bag and case supports receiving, material management, and quality investigations.
- Consistent Procurement: Case packaging of 24 sponges supports replenishment of recurring cleaning supplies.
Common Applications:
- Wafer lapping and polishing support operations
- Controlled removal of polishing slurries and rinse liquids
- Semiconductor equipment and tooling maintenance
- Cleaning small parts and precision components
- Wet cleaning of compatible laboratory surfaces
- Cleaning equipment interiors and accessible recessed features
- Localized pickup of water-based cleaning solutions
- Removing compatible process residues from equipment surfaces
- Cleaning workstations, benches, and fixtures
- Controlled equipment wipe-downs in manufacturing areas
- Liquid recovery from small, accessible surfaces
- Precision manufacturing equipment cleaning
- General cleanroom maintenance where high absorbency is important
- Cleaning operations requiring a soft, hydrated contact material
Best-Practice Use:
- Inspect Packaging: Check the individual sponge bag for visible damage or contamination before opening.
- Use Appropriate Gloves: Handle the sponge with gloves compatible with the facility's cleanliness requirements and cleaning chemicals.
- Condition Before Use: Hydrate the sponge with an approved liquid before cleaning surfaces requiring soft contact.
- Use Qualified Water: Where contamination limits require it, use the facility-approved grade of purified or deionized water.
- Allow Uniform Hydration: Wet the sponge evenly to achieve the required flexibility and working condition.
- Remove Excess Liquid: Apply controlled compression when necessary to avoid excessive dripping or flooding.
- Control Wiping Pressure: Use gentle, consistent contact rather than aggressive scrubbing.
- Use Controlled Strokes: Follow the facility's established wiping direction and overlap requirements.
- Monitor Sponge Loading: Rinse or replace the sponge as approved when it becomes saturated with contamination.
- Avoid Cross-Contamination: Do not return a contaminated sponge to clean rinse or chemical reservoirs.
- Protect Sensitive Features: Avoid transferring trapped particles or liquids into electrical connectors, precision openings, and vulnerable equipment features.
- Verify Surface Compatibility: Confirm that the sponge and cleaning liquid are suitable for the surface finish.
- Complete Final Rinsing: Use approved rinse or secondary cleaning steps when required by the process.
- Inspect Cleaning Results: Confirm that residue, slurry, and liquid-removal requirements have been achieved.
- Maintain Traceability: Record manufacturer lot information where required by the facility's quality procedures.
Wafer Lapping and Polishing Applications:
NovaCel is identified by Micronova for lapping and polishing applications in wafer manufacturing. Its high absorbency and soft hydrated characteristics make it useful for selected cleaning and liquid-removal steps associated with precision polishing operations.
- Slurry Pickup: Absorb compatible polishing slurry and rinse water from approved equipment or process surfaces.
- Post-Process Cleaning: Assist with removal of residual liquids during qualified wafer-processing support procedures.
- Tool Maintenance: Clean suitable polishing equipment surfaces, fixtures, and accessible process areas.
- Hydrated Surface Contact: Condition the sponge before contacting sensitive surfaces to obtain the intended soft and flexible characteristics.
- Particle Management: Prevent trapped abrasive particles from being dragged across delicate surfaces.
- Scratch Prevention: Use controlled pressure and inspect sponge cleanliness before each contact with sensitive components.
- Slurry Compatibility: Verify compatibility with the actual abrasive slurry, additives, pH, and process chemistry.
- Rinse Requirements: Follow the approved rinse sequence to prevent redeposition of polishing materials.
- Process Qualification: Evaluate residual particles, surface condition, and cleaning effectiveness under the actual process.
- Direct Wafer Contact: Use on wafer surfaces only when approved for the specific substrate, coating, and manufacturing step.
Wafer Cleaning Guidance: For lapping and polishing support, use a properly hydrated NovaCel sponge with a qualified cleaning or rinsing procedure. Control contact pressure, monitor abrasive-particle loading, and replace contaminated sponges as required. Applications involving direct wafer contact should be validated for surface compatibility, particle contribution, and cleanliness acceptance criteria.
Wetted Conditioning and Sponge Handling:
NovaCel changes handling characteristics when exposed to water. The dry sponge is relatively firm, while hydration makes the material soft and pliable. A consistent wet-conditioning procedure helps operators establish the same surface contact, absorbency, and cleaning technique.
- Initial Condition: Inspect the dry sponge and confirm that the surface is free from visible defects or contamination.
- Hydration Liquid: Select the facility-approved water or compatible conditioning liquid.
- Complete Wetting: Allow the sponge to hydrate sufficiently to achieve the required flexibility.
- Controlled Compression: Gently remove excess liquid when necessary without damaging the material.
- Working Moisture: Maintain a consistent sponge moisture level during cleaning.
- Surface Contact: Use the softened sponge with suitable pressure for the component or equipment surface.
- Liquid Capacity: Monitor saturation and avoid carrying more liquid than the cleaning procedure permits.
- Rinse Frequency: Establish when the sponge must be rinsed, replaced, or removed from service.
- Contaminant Retention: Do not assume that rinsing removes every trapped particle or residue.
- Storage Between Uses: Follow approved procedures for holding conditioned sponges if reuse is permitted.
- Reuse Qualification: Define acceptable cleaning, decontamination, storage, and replacement limits before reusing sponges.
Conditioning Principle: Hydration is an important part of NovaCel sponge performance. For sensitive surfaces, consistently condition the sponge before use, control excess liquid, and establish limits for particle loading and reuse. A clean sponge that has been properly wetted is preferable to forcing a dry, firm sponge across a delicate surface.
Chemical Compatibility and Cleaning Qualification:
Micronova describes NovaCel as having broad chemical resistance and good compatibility with common disinfectants and cleaning solutions. Chemical suitability depends on the actual formulation, concentration, temperature, contact duration, and cleaning method.
- Water-Based Cleaning: NovaCel's high water absorption supports approved aqueous cleaning and rinse applications.
- Deionized Water: Suitable for evaluation in processes that use controlled-purity water for conditioning and rinsing.
- Common Cleaning Solutions: Manufacturer documentation identifies general compatibility with common cleaning formulations.
- Disinfecting Solutions: Material compatibility does not establish that the sponge or cleaning procedure provides antimicrobial efficacy.
- Isopropyl Alcohol: Evaluate the exact solvent concentration and exposure conditions before incorporating IPA into the procedure.
- Oxidizing Agents: Confirm compatibility with the specific oxidizer and concentration.
- Acidic and Alkaline Solutions: Evaluate material behavior under the actual process pH and contact duration.
- Specialty Solvents: Confirm suitability before use with ketones, esters, hydrocarbons, or other aggressive formulations.
- Material Integrity: Inspect for swelling, softening beyond normal hydration, deformation, cracking, or changes in absorbency.
- Surface Compatibility: Verify that both the sponge and cleaning chemistry are suitable for sensitive finishes and coatings.
- Residue Contribution: Evaluate extractables and remaining residues when cleaning critical components.
- Process Temperature: Confirm compatibility with the intended temperature and exposure duration.
- Qualified Cleaning: Document the accepted chemistry, conditioning procedure, wiping technique, and replacement limits.
Chemical Selection Guidance: NovaCel offers broad manufacturer-described compatibility with common cleaning and disinfecting solutions, but the cleaning chemistry must be selected for the specific surface and process. Verify material integrity, absorbency, extractables, and final surface cleanliness before using the sponge with an unfamiliar solvent or formulation.
Non-Sterile Use and Autoclave Processing:
Micronova SP4-533 is supplied non-irradiated and should be treated as non-sterile at the point of receipt. The manufacturer identifies the sponge as autoclavable, allowing facilities to evaluate steam processing where appropriate.
- Supplied Condition: Non-irradiated and non-sterile.
- Cleanroom Classification: Intended for ISO Class 5 through ISO Class 9 applications, subject to facility qualification.
- Autoclave Compatibility: Manufacturer identifies SP4-533 as autoclavable.
- Validated Cycle: Establish the applicable steam cycle and load configuration under the facility's sterilization procedures.
- Packaging: Do not assume the individual product bag is suitable for autoclave processing.
- Post-Processing Integrity: Inspect the sponge for deformation, damage, or changes in functional properties after processing.
- Sterility Assurance: Autoclave compatibility alone does not establish a validated sterility assurance level.
- Aseptic Operations: Use appropriately processed and qualified material when the operation requires sterile presentation.
- Reuse: Repeated use or reprocessing requires approved limits and appropriate cleaning effectiveness criteria.
- Traceability: Maintain lot and processing records where required by the facility's quality system.
Sterility and Processing Guidance: SP4-533 is not supplied sterile. Although it is autoclavable, facilities must establish a qualified processing method, appropriate packaging, controlled handling, and required acceptance criteria before using it in operations that require sterile materials.
Selection Notes (NovaCel vs. Other Cleanroom Sponge Materials)
Cleanroom sponge materials differ in absorbency, surface contact, abrasive characteristics, liquid retention, and material cleanliness. Choosing the appropriate sponge depends on the type of contamination, surface sensitivity, and required cleaning method.
- NovaCel Solid PVA Sponge: Appropriate for high water absorption, soft hydrated surface contact, slurry pickup, and compatible precision cleaning tasks.
- NovaPoly Polyester Sponge: Provides an alternative synthetic polyester construction for processes where polyester-specific handling or material characteristics are preferred.
- PolyMesh Abrasive Sponge: Designed for cleaning situations requiring greater mechanical action, subject to surface compatibility and scratch-risk evaluation.
- Polyester Cleanroom Wipers: May be preferred for broad surface wiping, low particle contribution, and established wipe-based cleaning methods.
- Cellulose/Polyester Wipers: Can provide absorbency for general controlled-area cleaning where blended material characteristics meet the process requirements.
- Liquid Pickup: NovaCel is especially useful where substantial liquid absorption is a primary cleaning objective.
- Delicate Surface Contact: Hydrated NovaCel may be preferred over more abrasive materials when the surface is sensitive to scratching.
- Polishing Slurries: Select a sponge with sufficient liquid capacity and an approved method for preventing abrasive residue redistribution.
- Material Compatibility: Evaluate extractables, particle contribution, chemical compatibility, and surface interaction before substitution.
- Validated Cleaning: Changes in sponge material can affect cleaning efficiency, liquid retention, and residual contamination.
Sponge Selection Guidance: Choose NovaCel when the process benefits from substantial water absorption, soft wetted contact, and controlled liquid pickup. Select polyester sponge materials for polyester-specific requirements and abrasive mesh formats only where the surface and cleaning procedure permit additional mechanical action. Material substitution should be based on the actual cleaning method and contamination limits.
Contamination Control and Material Compatibility:
- Controlled-Environment Design: Micronova identifies SP4-533 for ISO Class 5 through ISO Class 9 environments.
- Water Retention: High absorption supports liquid pickup but can also retain dissolved or suspended contamination.
- Particle Loading: Monitor sponge condition and prevent trapped particles from contacting delicate surfaces.
- Extractables: Evaluate sponge material background when working with highly residue-sensitive products or surfaces.
- Surface Contact: Hydrate appropriately and use controlled pressure to reduce scratch risk.
- Chemical Compatibility: Confirm suitability for the actual chemical concentration, exposure time, and temperature.
- Cleaning vs. Disinfection: NovaCel is a cleaning sponge, not a disinfectant or a product with independent antimicrobial efficacy claims.
- Material Reuse: Establish acceptable reuse and reprocessing limits before returning a sponge to service.
- Final Cleaning: Use a qualified rinse or final-wipe step where the process requires tighter residue or particle control.
- Non-Sterile Presentation: SP4-533 is non-irradiated and requires appropriate processing when sterile use is required.
Packaging and Storage Recommendations:
- Individual Packaging: One sponge per protective bag
- Case Quantity: 24 individually bagged sponges
- Product Configuration: Solid white PVA sponge
- Irradiation: Not irradiated
- Lot Traceability: Lot numbers printed on individual bags and cases
- Certificate of Conformance: Available from the manufacturer
- Storage: Keep unused sponges in their protective packaging in a clean, dry environment
- Contamination Protection: Protect bags from dust, chemical contamination, uncontrolled moisture, and physical damage
- Package Integrity: Inspect individual bags before introducing sponges into controlled environments
- Handling: Use appropriate cleanroom gloves and approved material-transfer procedures
- Opened Packaging: Follow facility procedures for handling unused or partially conditioned material
- Wetted Storage: Do not leave hydrated sponges in uncontrolled conditions; follow approved holding and replacement procedures
- Steam Processing: Use only a facility-qualified autoclave method and suitable processing materials
- Reuse: Follow approved cleaning, reprocessing, and replacement limits
- Disposal: Discard used sponges according to the applicable chemical and contamination-control waste requirements
Manufacturer Technical Documents:
Micronova NovaCel Manufacturer Product Information: Click Here
Micronova SP4-533 NovaCel Sponge Product Specification - Revision 001 (PDF): Click Here
Micronova Sponges and Wipes Product Brochure (PDF): Click Here
SOSCleanroom NovaCel SP4-533 Product Information: Click Here
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Notes: Need assistance selecting NovaCel for wafer lapping and polishing support, high-absorbency cleaning, or precision equipment maintenance? Open the SOSCleanroom Technical Vault tab above for additional information about wetted conditioning, chemical compatibility, particle control, sponge selection, and controlled cleaning procedures.
SOSCleanroom.com supports semiconductor, pharmaceutical, biotechnology, medical device, laboratory, and other critical environments with specialized sponges, cleanroom wipers, cleaning solutions, and contamination-control supplies. Our team provides manufacturer documentation, product selection assistance, packaging information, and procurement support.
Product description updated: October 22, 2026 (SOS Technical Staff)
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