STX624 Sterile VersaWipe 4" x 4" Cellulose and Polyester Cleanroom Wiper

STX624 Sterile VersaWipe is a dry, sterile, hydroentangled nonwoven wiper made from a 55% cellulose / 45% polyester blend designed for general wiping and spill control in controlled environments. It is low-linting (no wiper is truly ‘zero-lint’ in every process condition) and engineered to combine fast wet-out and absorbency (cellulose) with wet strength and durability (polyester), while maintaining solvent compatibility and low extractables.

• Size: 4" x 4" (10 cm x 10 cm) nominal
• Material: 55% cellulose / 45% polyester (hydroentangled nonwoven)
• Construction: Nonwoven, hydroentangled with bidirectional strength
• Edge: Cut edge
• Sterile: Yes (gamma irradiated; validated to SAL 10⁻⁶ per AAMI guideline framework)
• Packaging: 50 wipers/bag; 50 bags/case (2,500 wipers/case)
• Use environments: ISO 5 (Class 100) – ISO 8 (Class 100,000) controlled areas (final suitability depends on your process and cleaning method)
• Country of origin: Made in the USA

Texwipe (an ITW company) differentiates itself in cleanroom wiping by treating the wiper as an engineered product, not a commodity consumable. Its manufacturing approach starts with substrate selection (including engineered blends such as cellulose/polyester for absorbency plus wet strength), then controls edge construction, controlled cleaning/manufacturing, and packaging aligned to cleanroom application tiers.

Texwipe also emphasizes verification through fibers/particles/ions/residue testing and describes process controls intended to improve lot-to-lot consistency and reduce handling-driven contamination risk. SOSCleanroom (SOS) supports that manufacturing discipline with a close working relationship with Texwipe focused on continuity of supply, clean documentation handoff (certs, lot traceability), and practical application support—so customers can standardize wiping materials with predictable performance while maintaining procurement reliability and audit readiness.

• Fiber blend (55% cellulose / 45% polyester)
• Nonwoven, hydroentangled construction with excellent bidirectional strength
• Solvent-safe Bag-Within-A-Bag cleanroom packaging
• Statistical quality control
• Low extractables and no chemical binders

• Fast wet-out and high absorbency: Cellulose content supports efficient pickup of aqueous spills and controlled solution handling.
• Wet and dry strength: Polyester content helps the wipe hold together under pressure and during wet wiping.
• Solvent compatibility: Commonly used with IPA and many other cleanroom-compatible solvents/cleaners (verify compatibility to your chemistry and SOP).
• Lower residue risk approach: Hydroentangled construction with no chemical binders helps reduce binder-driven residue concerns.

• General-purpose sterile wiping where economy and cleanliness are both important
• Spill control (especially aqueous spills) and routine wipe-downs
• Applying and removing disinfectants, cleaners, lubricants, adhesives, and residues
• Cleaning precision components and lab apparatus
• Lining trays for holding, protecting, drying, staging, or storing parts and devices

• Fold for control: For 4" x 4", fold once or twice to create multiple clean faces; rotate faces instead of re-wiping with a loaded surface.
• Wipe pattern: Use straight-line strokes with slight overlap to avoid re-depositing contamination.
• Wet vs. dry: For solvent wipe-downs, dampen—do not over-saturate—so you maintain control and reduce dripping and streaking.
• Change-out discipline: Replace early; the 50 wipers/bag format is designed to support frequent discard before a face becomes overloaded.
• Two-wipe strategy when needed: Use STX624 for absorb-and-lift, then follow with a higher-purity synthetic wipe for final-pass steps when your defect/film risk analysis demands it.

• STX624 vs. TX624: Same VersaWipe material family and nominal size; STX624 is sterile (gamma irradiated) for sterile programs, while TX624 is the non-sterile configuration.
• Blended nonwoven vs. knit polyester: Poly-cellulose blends tend to wet-out faster and absorb more readily for spill pickup and solution handling; knit polyester options are often chosen for more abrasion-driven wiping and lower fiber risk on highly defect-sensitive final passes.
• Cut edge vs. sealed edge: STX624 is a cut-edge blended wipe for general-purpose sterile wiping and spill control; sealed-edge formats are typically reserved for the most fiber/defect-sensitive final wipes (qualify to your SOP and acceptance criteria).

VersaWipe Dry Wipers

• TX624: 4" x 4" nominal (10 cm x 10 cm), non-sterile VersaWipe configuration
• TX629: 9" x 9" nominal (23 cm x 23 cm), VersaWipe dry blended nonwoven
• TX622: 12" x 12" nominal (31 cm x 31 cm), VersaWipe dry blended nonwoven

Sterile blended nonwoven alternatives

• STX609: 9" x 9" sterile cellulose/polyester nonwoven option in the TechniCloth family