The Technical Vault
By SOSCleanroom
Sterile, Sealed-Border, High-Sorbency: Why TX3215 SterileWipe AS10 Is Built for Aseptic Wipe-Downs That Cannot Drift
Last reviewed: Jan. 3, 2026 | Audience: aseptic manufacturing, contamination control, cleanroom operations, EHS, quality
Texwipe TX3215 SterileWipe™ AS10 (12" × 12") is designed for a specific kind of controlled-environment problem: high-sorbency wipe-downs in critical sterile environments, where the wipe must carry and distribute larger volumes of cleaning or disinfecting chemistry without becoming a source of particles, fibers, or technique-driven variability.
AS10 is a two-ply, double-knit, 100% continuous-filament polyester wipe with thermally sealed borders, supplied gamma-irradiated to a 10−6 Sterility Assurance Level (SAL). The result is a sterile, sealed-border knit that supports rigorous wiping while maintaining an extremely low releasables profile consistent with sterile Class 100 expectations when used with disciplined technique.
What it’s for
TX3215 is engineered for high-sorbency wiping in the most critical sterile cleanroom environments—including pharmaceutical aseptic fill areas, biotechnology manufacturing, microbiological laboratories, sterile suites, and prep rooms. It is specifically positioned for sterile wiping of environmental surfaces and production equipment in aseptic operations, and for workflows that require applying larger volumes of cleaning, sterilizing, and disinfecting solutions without losing control of releasables or handling behavior.
Decision drivers
TX3215 earns its place when sterility, edge control, and liquid-handling capacity are the primary constraints:
- Sterility posture: gamma-irradiated to 10−6 SAL, with independent quality control audits supporting sterility assurance.
- Edge control by design: thermally sealed borders reduce edge-driven particle and fiber release during folding and rigorous wipe patterns.
- Construction chosen for abrasion and strength: two-ply, double-knit, continuous-filament polyester supports aggressive wiping with minimal degradation.
- High-sorbency behavior: sized and built to apply and manage larger volumes of cleaning/disinfecting chemistry without “running out of capacity” mid-task.
- Disinfectant exposure tolerance: positioned to withstand common cleaning/disinfecting solutions including bleaches, phenols, and quaternary ammonium compounds.
- Documentation and traceability: lot-specified shipment information supports record keeping and investigations (Certificate of Processing confirming radiation dosage, Certification of Compliance, expiration date).
- Packaging designed for controlled introduction: packaging permits alcohol wipe-down of the exterior bag prior to introducing the inner bag into sterile suites.
Materials and construction – explained like an engineer
“Sterile polyester wipe” is too broad to be useful. In a sterile suite, the failure mechanism is often edge degradation and fiber/particle release under real wiping force—especially when technicians fold, press into corners, and wipe across hardware, hinges, and equipment seams. TX3215 addresses that mechanism with continuous-filament polyester (long filaments that resist breakage) in a two-ply, double-knit architecture for strength, paired with thermally sealed borders to control edge-driven releasables.
The other engineer’s reality: no wipe is truly “lint-free” in every process condition. The control target is low-linting behavior in your actual use window—pressure, surface texture, chemistry load, and discard discipline matter as much as substrate selection.
Specifications in context
TX3215 is a 12" × 12" nominal (31 cm × 31 cm) sterile wipe. The 12" × 12" format is not just convenience—larger surface area supports a more controlled wipe path (fewer “reset strokes”), larger folded faces, and better coverage for equipment wipe-downs where chemistry must remain wet for a defined contact time.
Packaging is configured for sterile handling: 100 wipers per bag, supplied as 5 inner bags of 20, with 5 bags per case. In practice, the inner-bag segmentation supports staged issuance and reduces the risk of turning one open package into a shift-long variability source.
Cleanliness and performance metrics
For sterile wiping, performance has two jobs: (1) move chemistry and soils in a predictable way, and (2) avoid adding releasables and residues that complicate sterility and contamination control. The datasheet values below are published as typical analyses—use them as a qualification starting point, then confirm within your method and acceptance criteria.
- Basis weight: 195 g/m2
- Sorptive capacity: 595 mL/m2
- Sorptive rate: 0.3 seconds
- Particles (0.5–5.0 μm): 6 × 106 particles/m2
- Particles (5.0–100 μm): 315,000 particles/m2
- Fibers (>100 μm): 230 fibers/m2
- NVR (IPA extractant): 0.09 g/m2
- NVR (DI water extractant): 0.05 g/m2
Interpretation tip: When a sterile wipe-down “fails,” the root cause is often technique and chemistry control (over-wetting, reusing a loaded face, uneven dwell coverage) rather than the wipe itself. High sorbency is an advantage only when paired with disciplined folding and discard rules.
Why sterility, packaging, and traceability matter
In aseptic areas, “sterile” is not a label—it is a documentation and handling system. TX3215 supports that system with gamma irradiation to 10−6 SAL, an expiration date on each package, and lot-specified shipment documentation (including a Certificate of Processing confirming radiation dosage and a Certification of Compliance).
Packaging is designed to support introduction controls: the outer bag can be alcohol-wiped prior to transfer, and the segmented inner packaging helps reduce open-pack exposure and handling drift. Pair these packaging controls with your site SOP for staged opening, transfer disinfection, and time-out limits once packaging is breached.
Best-practice use
- Stage the transfer: disinfect the exterior bag per your aseptic transfer SOP before introducing inner packaging into the sterile space.
- Fold for control: use consistent quarter-folding to create stable faces; treat each exposed face as single-pass where critical.
- Control chemistry loading: apply enough solution to meet required dwell/contact time, but avoid flooding seams and hardware where pooling becomes a residue and redeposit mechanism.
- One-direction strokes: use parallel, overlapping passes; avoid “scrub back-and-forth” patterns that redistribute soils and shorten face life.
- Discard early: high-sorbency wipes can hold a lot—do not use that capacity as permission to overwork a loaded face.
- Disinfectant discipline: for bleach/phenols/quats, maintain concentration control, labeling, and time-in-use requirements; the wipe supports the process, but the chemistry control owns the compliance outcome.
Common failure modes — and how TX3215 helps
Sterile wipe-down issues tend to cluster into a few repeatable patterns: (1) edge-driven releasables during aggressive wiping, (2) inconsistent chemistry loading and dwell coverage, (3) reusing a contaminated face too long, and (4) handling drift from open packaging over a shift. TX3215’s sealed borders and double-knit, two-ply construction help reduce degradation during rigorous wiping, while its sterile packaging segmentation supports better handling discipline. The remaining controls are procedural: fold/rotate/discard rules and chemistry standardization.
Closest comparators
The most defensible comparisons are to other sterile, sealed-edge/sealed-border, polyester knit wipes intended for high-sorbency wipe-downs in aseptic and sterile suites.
Contec sterile polyester knit wipe families (sealed-edge sterile configurations) are typical evaluation peers when facilities want a sterile sealed-edge knit with strong documentation and transfer-friendly packaging options. Compare edge strategy, sorbency behavior, and lot documentation posture.
Berkshire sterile sealed-edge polyester knit wipers are appropriate peers when edge control and releasables are the dominant risk. Compare how the wipe behaves under your disinfectant set (drag, glide, streaking tendency), and whether packaging segmentation supports your staged issuance model.
Rule of thumb: When sterile transfer and edge control are non-negotiable, prioritize sealed-edge/sealed-border sterile knits with strong lot documentation. When wetness repeatability becomes the limiting factor, standardize the chemistry delivery (validated application method or a controlled pre-wetted system where appropriate).
Where TX3215 fits in a cleanroom wiping program
TX3215 is the right selection when a program needs a sterile, sealed-border, high-sorbency wipe for aseptic wipe-downs—especially where technicians must apply larger volumes of cleaning and disinfecting solutions while maintaining control of particles, fibers, and handling variability. Use it to stabilize wipe-down performance in sterile suites, then keep the program mature by enforcing technique discipline (fold/rotate/discard) and chemistry controls (concentration, dwell time, time-in-use).
Terminology note: TX3215 is engineered for low-linting performance; no wiper is truly “lint-free” in every process condition.
Source basis
-
SOSCleanroom product page: “Texwipe TX3215 SterileWipe AS10 12" × 12" Polyester Cleanroom Wiper”
(link).
-
ITW Texwipe datasheet: “SterileWipe™ AS10 TX3215” (effective Aug. 2012) including sterility posture, construction, packaging configuration, applications, and typical performance/contamination characteristics
(PDF).
-
Test-method framework referenced in the datasheet: IEST-RP-CC004.3 and ASTM E2090 (method context for particle/fiber and releasables characterization).
Source: SOSCleanroom Technical Vault | Last reviewed: Jan. 3, 2026 | © 2026 SOS Supply. All rights reserved.