In high-sensitivity cleaning, two failures cause most “mystery defects”: (1) particles introduced during wiping, and (2) static events that attract (or re-attract) contamination right back onto the surface. ULTIMATE 5 ESD wipers are positioned for ISO Class 3–4 cleaning where operators need a knit wiper that supports static control, stays mechanically stable in use, and is processed and packaged for controlled environments.

Note on terminology: many teams say “lint-free,” but no wiper is truly lint-free. The operational target is low-linting performance paired with sealed edges and disciplined technique.

• Routine and event-driven wipe-downs of benches, fixtures, carts, and non-porous equipment exteriors in ISO Class 3–4 areas.
• Static-sensitive environments where a standard polyester knit can be “too insulating” and can contribute to attraction/redeposition behaviors.
• Application/removal of cleaning solutions and residues when your process calls for sealed edges and cleanroom-packaged wipes.
• Controlled spill response on smooth surfaces (use your facility’s chemical compatibility and spill-response rules).

• ESD/antistatic knit construction intended to support static-control handling while wiping.
• Sealed edges to reduce edge-related fiber release versus cut-edge knits.
• Cleanroom-focused processing described as cleaned/scoured, laser cut, and laundered with fine filtration practices.
• Packaging discipline described as hermetically sealed in cleanroom-cleaned packaging and double bagged.
• Lot-to-lot traceability is explicitly called out on the SOSCleanroom listing.

The SOSCleanroom listing describes a knit fabric made from virgin polyester fibers combined with carbon core nylon fibers that are continuously filamented through a no-run knit structure. In practice, that combination is typically selected for two reasons: mechanical stability during wiping and improved static-control behavior versus a fully insulating knit.

Edges are positioned as sealed/laser cut (per the listing’s process description). Sealed edges are a common control point because the edge is where a knit is most vulnerable to mechanical disturbance if you wipe across sharp corners, burrs, or poorly deburred fixtures.

Attribute	ULT5-1212 (12" x 12")
Product type	ESD/antistatic cleanroom wiper; sealed edges; double bagged
Nominal size	12" x 12"
Material (as described)	Virgin polyester fibers + carbon core nylon fibers (no-run knit)
Cleanroom suitability (as listed)	ISO Class 3 & 4 (Class 1 & 10)
Sterility	Not stated as sterile on the SOSCleanroom listing
Edge treatment	Sealed edges (process references include laser cutting)
Packaging	Double bagged; “hermetically sealed” packaging is described
Traceability	Lot-to-lot traceability (explicitly stated)

The SOSCleanroom page positions this wiper as extremely low in particle generation and chemical extractables, but does not publish numeric ionic or NVR values in the visible listing. For validation-driven programs, obtain the supplier’s current technical data and align it to your acceptance criteria and test methods.

Ion / group	Published value	Notes
Not published in visible listing	Not published	Request current technical data from the supplier for your QA file.

Metric	Published value	Notes
NVR	Not published	Use your internal solvent/gravimetric method alignment for qualification.

• Pack options: Bag or case.
• Bag unit: 100 wipers per bag.
• Case unit: 10 bags of 100 wipers per case.
• Packaging controls (as described): double bagged; hermetically sealed in cleanroom-cleaned packaging under class 10 air-stream.
• Processing controls (as described): cleaned/scoured; laser cutting; proprietary cleaning; laundered in a Class 100 environment using ultra-filtered water and HEPA-filtered air during moisture removal.
• Traceability: individually inspected with lot-to-lot traceability; ISO 9000 standards are referenced on the listing.
• Country of origin: not stated for this SKU in the visible listing. The manufacturer is described as operating facilities in the USA, China, Germany, and Mexico.

A high-grade wiper only performs like a high-grade wiper if the technique is controlled. The goal is simple: move contamination off the surface and keep it captured—without re-depositing it. In ESD-sensitive areas, also confirm your grounding, bench-mat condition, and environmental controls before assuming the wiper is the variable.

• Redeposition haze: usually technique-related (too many passes, not enough face changes, wrong solvent loading).
• Edge snagging / mechanical disturbance: wiping across sharp corners can damage any knit; sealed edges help, but they do not make a wiper “corner-proof.”
• Static attraction persists: typically a grounding/humidity/workstation issue rather than a wiper issue—confirm straps, mats, and ground points.
• Streaking: can indicate excess solvent, incompatible chemistry, residue load too high for a single wipe step, or a “smearing” pass pattern.
• Cross-contamination: the most common root cause is reusing a wiper face across zones or surfaces with different risk profiles.

The closest alternatives are other ESD-focused polyester knit wipes with controlled edges and cleanroom packaging. Within the SOSCleanroom catalog, these are commonly evaluated alongside ULTIMATE 5 ESD depending on your class target, thickness preference, and whether you want antimicrobial positioning.

• VISION 50 ESD Cleanroom 12" x 12" Wiper (ISO Class 5): positioned for a different ISO class target; useful when the ESD requirement remains but the environment class differs.
• Ultimate 5 ESD Antibacterial Wiper (9" x 9"): a same-family alternative when size and antimicrobial positioning matter to your program.
• VISION 1 Pink ESD Cleanroom 12" x 12" Wiper (ISO Class 6): a pragmatic option for less critical zones where ESD control remains important.

This product is explicitly marketed on SOSCleanroom for ISO Class 3–4 wipe-down tasks and is described as extremely low in particle generation and chemical extractables, with sealed edges and disciplined packaging. Practically, that combination is most valuable when your contamination budget is tight and your operators cannot “wipe and hope”—you need repeatable outcomes across shifts.

If your quality system is ISO 14644-aligned, treat the wiper as one control within a larger chain: gowning discipline, solution control, workstation design, and verification (visual inspection, residue checks, particle trending) determine whether the wipe step is actually closing risk.