Texwipe TX4012 MiracleWipe (10" x 12") is a dry, 100% continuous-filament nylon cleanroom wiper engineered for steps where “standard knit polyester” can be too slick to lift certain films, smudges and handling soils efficiently. The value proposition is mechanical: a nylon knit with a distinctive texture that adds controlled bite while preserving cleanroom laundering, packaging discipline and traceability.

For customers standardizing wiping across shifts, TX4012 also reduces the temptation to substitute rough shop wipes (and the rework that follows). SOSCleanroom supports Texwipe’s manufacturing discipline with continuity-of-supply planning, documentation handoff (lot traceability, certs as applicable), and application support so teams can qualify a repeatable wipe method instead of chasing operator-to-operator variability.

TX4012 is commonly selected for spill control and general wipe-down in critical environments, wiping and cleaning surfaces/equipment/parts, and applying/removing lubricants, adhesives, residues and other solutions (including disinfectants) where the procedure calls for a durable knit. It is also used for cleaning/polishing metallic and nonmetallic magnetic-media disk surfaces and for sensitive optical and photomask surfaces when surface compatibility and technique are validated for the specific substrate and endpoint.

TX4012 is a deliberate material choice. Use these drivers to confirm you are selecting the right mechanism for your surface, soil type and process controls.

• Cleaning mechanics (texture): The knit texture provides a controlled scrubbing surface that can improve soil lift versus smoother knits in certain wipe-down steps.
• Strength under repeated folds: Continuous-filament nylon in a double-knit, no-run interlock pattern supports durability when operators fold, refold and apply pressure.
• Edge strategy (cut edge): Cut edge keeps the wipe flexible and fold-friendly; if perimeter control is the dominant risk for a step, sealed-edge/ultrasonically sealed options are the usual escalation.
• ISO class fit: TX4012 is positioned for ISO Class 4–8 environments (Class 10–100,000 / EU Grade A–D), with final suitability determined by your qualification method and acceptance limits.
• Extractables posture: Typical NVR and ionic extractables should be treated as a starting point; if your process is sensitive to residues or ions, plan method-fit checks in the exact chemistry and contact time you run.
• Traceability and handling discipline: Bag-within-a-bag style packaging and lot coding reduce handling-driven contamination risk and support investigation/change control workflows.

TX4012 is constructed from 100% nylon (polyamide) continuous filament, cleanroom laundered, with a double-knit, no-run interlock pattern. Compared with many polyester knits, nylon’s combination of elasticity and abrasion tolerance can translate into a wipe that “works” a film instead of skating over it, particularly on stainless, fixtures and other durable surfaces where controlled mechanical action is a benefit.

The cut edge is intentionally flexible and foldable, but it shifts the control burden to technique. If operators lead with the edge, scrub in circles, or reuse a loaded face, re-deposition risk increases quickly. The engineered outcome is achieved when the wipe is used as a folded, face-forward cleaning interface with defined discard triggers.

Size: 10" x 12" (25 cm x 31 cm) nominal. Type: dry wiper. Material: 100% continuous-filament nylon. Construction: double-knit, no-run interlock. Edge: cut edge. Packaging: 200 wipers/bag (4 inner bags of 50); 4 bags/case. ISO environment (manufacturer): ISO Class 4–8 (Class 10–100,000 / EU Grade A–D). Temperature guidance: appropriate for use with temperatures less than 450°F (232°C). Shelf life (non-sterile dry): 5 years from date of manufacture. Country of origin (SOS listing): Made in the USA.

In practice, the 10" x 12" format is a “coverage and control” size: large enough to fold into multiple clean faces while spanning trays, tooling, and equipment panels. It is also an efficient lining wipe for staging and drying when your procedure allows it, helping protect parts from incidental contact with work surfaces.

Use wiper data as a framework: particles/fibers indicate shedding potential, NVR indicates residue risk, and ionic extractables indicate corrosion/ionic contamination risk. Manufacturer values are typical analyses at time of publication; validate performance in your solvent system, contact time, wiping pattern and endpoint checks.

Typical contamination metrics (Texwipe MiracleWipe TDS): LPC ≥0.5 µm: 14.5 x 10⁶ particles/m²; fibers >100 µm: 2,600 fibers/m². Typical NVR: IPA extractant 0.09 g/m²; DI water extractant 0.35 g/m². Typical ions: sodium 1.4 ppm; potassium 0.62 ppm; chloride 2.6 ppm. Physical/absorbency (typicals): sorptive capacity 420 mL/m²; sorptive rate <1 second; basis weight 170 g/m².

Operational interpretation: if your process is sensitive to aqueous residue or ionic carryback, treat DI-water NVR and ionic typicals as a signal to run method-fit checks (incoming controls, surface endpoint inspection, and any residue/ionic monitoring you use). If your constraint is efficient soil lift on durable surfaces, nylon knit texture can reduce total wipe strokes and time-on-surface.

TX4012 is packaged with inner bags that help maintain a cleaner boundary at wipe stations and reduce incidental exposure after the outer bag is opened. Individually lot-coded product supports deviation investigations and change control when a wiper is standardized across rooms, shifts, or tools. For regulated programs, the lot code is part of the control system: it enables documented linkage between incoming material, the cleaning step, and any downstream inspection outcomes.

TX4012 performs best when the wipe is treated as a controlled, folded cleaning interface. The goal is repeatable soil lift with minimal re-deposition.

• Fold for clean faces: Fold into quarters (or eighths for smaller targets). Use one face per pass; rotate faces as soon as you see streaking, haze, or visible load.
• Straight, overlapping passes: Wipe clean-to-less-clean with parallel strokes; avoid circular scrubbing unless your SOP explicitly calls for it on a validated, durable surface.
• Dampen, don’t flood: When using IPA/acetone/approved chemistry, apply controlled wetting to the wipe. Over-wetting increases streak risk and mobilizes residues beyond the intended wipe zone.
• Protect sensitive optics/photomasks: Remove loose particulate first (approved non-contact method), keep the wipe face flat, and never drag embedded particles under pressure.
• Define discard triggers: Use a simple, auditable rule (for example: one wipe per defined surface area or per component) to prevent carryback.

Streaking/haze: Often a face-management or wetting-control issue (reusing a loaded face, over-wetting). Correct by rotating faces sooner, tightening wetting control, and confirming chemistry-fit for the residue class.

Scratch events on sensitive parts: Typically caused by dragging grit/particles under pressure. Correct by removing loose particulate first, keeping the face flat, and discarding early (do not “power through” a loaded wipe).

Re-deposition/carryback: Usually driven by circular wiping or overuse beyond soil capacity. Correct with one-direction passes, defined stop points, and a one-wipe-per-area rule.

Edge-driven particle contribution: Cut edges can become the contact point when operators wipe “edge-first.” Correct by face-forward wiping; escalate to sealed-edge knit wipes for steps where perimeter control is the dominant risk.

Contec Polynit Wipes (knife-cut knit polyester): A knit polyester wipe designed around a very soft knife-cut edge for surfaces vulnerable to scratching. Mechanistically, this is an edge-feel and surface-safety play with polyester chemical resistance. Choose Polynit when the dominant risk is scratch sensitivity and you do not need nylon’s added “scrub” texture for soil lift.

Berkshire MicroSeal 1200 (ultrasonically sealed-edge knit polyester): A sealed-edge, cleanroom laundered polyester knit wipe positioned for tighter contamination control where perimeter control is a primary driver. Mechanistically, ultrasonic sealing is an edge-control escalation to reduce edge contribution. Choose MicroSeal 1200 when your step is dominated by perimeter control and the tightest particle budgets; choose TX4012 when controlled mechanical lift and durability are the constraint.

TX4012 fits as a “mechanical lift” wiper in a tiered wiping program: use it when soils, films, or handling residues require more texture than a smoother knit provides, and when you want a durable wipe that holds integrity during wet wiping and spill pickup. In many programs, it complements (rather than replaces) polyester knits: nylon knit for scrub/soil-lift steps on durable surfaces, polyester knits for general wipe-downs, and sealed-edge polyester knits for defect-sensitive final wipes. If you are qualifying TX4012 for optics/photomasks, document fold geometry, stroke direction, wetting limits, and endpoint checks so the method is repeatable across shifts and audit-ready.

• SOSCleanroom product page — Texwipe TX4012 MiracleWipe 10" x 12" nylon cleanroom wiper: https://www.soscleanroom.com/product/wipers/texwipe-tx4012-miraclewipe-10-x-12-nylon-cleanroom-wiper/
• Texwipe MiracleWipe Wipers Technical Data Sheet (TEX-LIT-TDS-012 Rev.00-02/17): https://www.texwipe.com/images/uploaded/documents/Wipers/Texwipe-MiracleWipe-TDS-ENG.pdf
• IEST-RP-CC004.3 — Evaluating Wiping Materials Used in Cleanrooms and Other Controlled Environments (test-method anchor): https://www.iest.org/
• ASTM E2090-12 — Size-differentiated counting of particles and fibers released from cleanroom wipers (test-method anchor): https://www.astm.org/
• ISO 14644-1 / ISO 14644-2 — Cleanrooms and associated controlled environments (classification & monitoring context): https://www.iso.org/
• Contec Polynit Wipes product data sheet (mechanism competitor): https://cleanroom.contecinc.com/hubfs/1%20-%20Website%20Assets/Product%20Center/Product%20Data%20Sheets/Cleanroom/Wipes/PDSW075_Polynit%20Wipes.pdf?hsLang=en
• Berkshire MicroSeal 1200 product information (mechanism competitor): https://berkshire.com/wp-content/uploads/2024/01/MicroSeal-1200.pdf