STX758B Sterile Micro Alpha® Polyester Knit Cleanroom Swab (Light-Green Handle)

Texwipe STX758B is a sterile, micro-size Alpha® polyester knit cleanroom swab engineered for precision spot cleaning and controlled swabbing in tight geometries—grooves, tracks, slots, ports, ferrules, recesses, and other small features where wipes cannot maintain contact or consistent stroke discipline. The swab head is cleanroom laundered 100% polyester knit and thermally bonded to a virgin polypropylene handle to seal exposed edges and eliminate adhesive contamination. Performance intent is low-linting behavior (no swab is truly ‘zero-lint’ in every process condition), ultra-low residue contribution (low NVR) and low ionic background for critical cleaning, surface sampling, and cleaning-validation workflows that depend on repeatability and defensible documentation.

Sterile-program note: STX758B is individually sleeved with lot coding and package-level expiration dating, then triple-bagged in 50-sleeve inner bags to support staged sterile introduction. Teams often standardize STX758B when micro-access cleaning must remain sterile and audit-ready (controlled transfer, lot traceability, expiration control, and consistent swab geometry).

Specifications:

SKU: STX758B
Swab family: Alpha® (sterile)
Swab type: Dry swab (sterile)
Head material: Knitted Alpha® polyester (cleanroom laundered)
Head bond: Thermal (complete thermal bond; no adhesive)
Handle material: 100% virgin polypropylene
Handle color: Light green (trademarked handle color convention; “TEXWIPE” name embossed on handle)
Dimensions (approx.):
- Head width: 3.2 mm (0.126")
- Head thickness: 2.5 mm (0.098")
- Head length: 11.0 mm (0.433")
- Handle width: 2.2 mm (0.087")
- Handle thickness: 2.2 mm (0.087")
- Handle length: 60.0 mm (2.362")
- Total swab length: 70.0 mm (2.756")
Sterility: Gamma irradiated to 10^-6 Sterility Assurance Level (SAL) and sterile validated according to AAMI guidelines
Testing focus: Tested for endotoxins, ions, and Non-Volatile Residue (NVR) (typical cleanliness characterization)
Packaging (case): 10 bags of 50 swabs per case (individually sleeved / 500 swabs total)
Packaging details: 1 swab per peel-apart sleeve; 50 sleeves per inner bag (triple-bagged); 10 inner bags per case (case liner forms an additional protective layer)
Shelf life: 3 years from date of manufacture (sterile swab program)
Use environments: Commonly used across ISO-classified cleanrooms and controlled areas (final suitability depends on your process, transfer method, and swabbing technique)
Country of origin: Made in The Philippines; sterilized in the USA

About the Manufacturer:

Texwipe (an ITW company) treats the cleanroom swab as a controlled, engineered tool—not a commodity. For Alpha® polyester knit swabs like STX758B, that shows up in the knit substrate selection, precision geometry, cleanroom processing/laundering, and complete thermal bond construction designed to remove one of the most common contamination variables: adhesive chemistry at the head-to-handle interface.

For sterile programs, Texwipe pairs that construction discipline with packaging and documentation controls (individual sleeves, lot coding, expiration dating, and multi-layer bagging) intended to support staged transfer into sterile or higher-control zones. SOSCleanroom (SOS) supports that discipline with a close working relationship with Texwipe focused on continuity of supply, clean documentation handoff (lot traceability), and practical application support—so customers can standardize sterile micro-swabbing with predictable performance, reliable replenishment, and audit readiness.

STX758B Features:

Micro-size Alpha® polyester knit head for precision access in tight geometries
Complete thermal bond construction eliminates adhesive contamination and helps seal exposed edges
Cleanroom processed/laundered head engineered for low background contribution (low NVR / low ions—typical values are used for baseline qualification)
100% virgin polypropylene handle for broad chemical resistance and reduced risk of handle-sourced contaminants
Trademarked light-green handle color convention with “TEXWIPE” embossed on the handle for traceability cues
Each swab individually packaged in a peel-apart sleeve
Each sleeve lot coded and marked with an expiration date for inventory control
Fifty (50) sleeves triple-bagged for staged sterile introduction; triple-bagged bags packed in a case liner as an additional protective layer
Gamma irradiated to 10^-6 SAL and sterile validated according to AAMI guidelines
Tested for endotoxins, ions, and Non-Volatile Residue (NVR)

STX758B Benefits:

Micro-access control: The ~3.2 mm head width and compact overall length help maintain contact and single-direction stroke control inside narrow channels, connector shells, ferrules, and recessed features
Sterile introduction + documentation: Individual sleeves, lot coding, expiration dating, and multi-layer bagging support controlled transfer, traceability, and investigation readiness
Reduced chemistry variables: Thermal bonding eliminates adhesive contamination pathways that can show up as streaks, residue, or analytical noise
Low-linting performance: Knit polyester is selected for controlled shedding behavior (process-dependent) and resistance to snagging/abrading
Low residue risk: Low NVR positioning helps reduce film/haze risk when using volatile solvents (verify against your method when validation-sensitive)
Broad solvent compatibility: Polyester knit head + polypropylene handle are commonly used with IPA and many cleanroom-compatible solvents/solutions (confirm compatibility to your chemistry and SOP)

Common Applications:

Precision spot cleaning of grooves, tracks, slots, ports, and other small spaces
Cleaning of connector shells, ferrules, optic mounts, sensor pockets, and tight mechanical interfaces
Applying and removing lubricants, adhesives, and process solutions in a critical clean environment
Solvent use (such as IPA) for controlled application/removal and residue-sensitive wipe points
Surface sampling and cleaning validation work where neutral background contribution matters
Environmental monitoring and controlled swabbing steps that require sterile packaging discipline

Best-Practice Use:

Open-and-use discipline: Open the peel-apart sleeve only when ready to swab; minimize open exposure time in the hood/clean zone.
Staged sterile transfer: Use the multi-layer bagging as intended (de-bag outer layers outside the critical zone; introduce inner layers per your gowning/transfer SOP).
Control wetness: For solvent swabbing, dampen the head and remove excess. Over-wetting turns a micro swab into a solvent delivery tool that can drive residues into corners.
Single-pass technique: Use straight-line strokes with parallel overlap. Rotate the swab head/faces instead of re-wiping with a loaded surface.
Low-pressure contact: Use the lowest pressure that maintains full head contact—especially on coated optics, polished metals, and soft polymers.
Aliquot discipline: Avoid re-dipping into a shared solvent reservoir. Use single-use aliquots or controlled dispense to reduce cross-contamination.
Change-out triggers: Replace the swab when the head shows visible soil loading, tackiness, streaking, or loss of contact control.

Selection Notes (STX758B vs. Other Options)

Sterile vs. non-sterile (TX758B): Choose STX758B when sterile introduction, lot traceability, and expiration control are required by the workflow; choose TX758B when sterile processing is not required.
Micro head vs. larger heads: Use STX758B for the smallest wipe points (tight channels, ports, ferrules, fine recesses). Step up to larger Alpha® or CleanFoam® heads when coverage per swab matters more than micro access.
Thermal bond preference: When residue risk and analytical sensitivity are high, thermal bonding reduces an entire class of “unknown variables” associated with adhesives.
Documentation expectations: If your program is audit-facing (sterile compounding, aseptic processing, medical device, biologics), sleeve-level lot and expiration marking simplifies investigation and inventory controls.

Texwipe.com Product Page: Click Here
Texwipe.com PDF (Sterile Swabs Technical Data Sheet): Click Here
Link to SOSCleanroom Blog (good information): Click Here

Notes: Need application guidance for Texwipe STX758B sterile micro Alpha® polyester knit cleanroom swabs—including technique tips for tight geometries, wetting control for IPA swabbing, and qualification considerations for surface sampling/cleaning validation? Open the SOSCleanroom Technical Vault tab above for practical operator guidance and program-fit context focused on real cleanroom workflows.

SOSCleanroom.com supports contamination-control programs with cleanroom consumables in stock, fair pricing, and responsive technical support—backed by same-day shipping options and customer service that understands real cleanroom workflows.

The Technical Vault

By SOSCleanroom

STX758B sterile micro swab: tight-geometry precision cleaning with controlled, repeatable technique

Last reviewed: Jan. 6, 2026 | Audience: contamination control, aseptic processing, quality

Texwipe STX758B is a sterile micro polyester knit cleanroom swab designed for precision cleaning and sampling in tight geometries such as grooves, ports, ferrules, and recessed features. The Alpha® knit head provides controlled contact and low-lint performance in environments where consistency and background contribution matter.

Its thermally bonded construction and compact rigid handle support repeatable technique, while sterile packaging enables proper aseptic introduction into critical environments where maintaining barrier integrity and standardized handling is required.