When teams choose a 99% IPA presaturated wipe, it is usually for one of two reasons: you need a predictable, fast-dry solvent wipe-down, or you are trying to reduce water carryover on sensitive surfaces (optics, electronics, coated parts, metrology fixtures). FS-ULT70-99.99 is built around that reality: a heavy-weight, sealed-edge polyester knit that stays tough under pressure, while controlling loose fibers and helping reduce the “wipe trail” that shows up when a wipe is under-built for the job.

This is a tub-dispensed, presaturated cleanroom wipe used for routine and event-driven cleaning where consistent wetness and solvent concentration matter. Typical use cases include:

• Final wipe-down of tools, benches, carts, and fixtures before entry into more critical spaces.
• Removal of residues (adhesives, films, fingerprints, light oils) where a fast-dry IPA approach is preferred.
• Cleaning “touch items” that still live in controlled areas (notebooks, phones, hand tools) using a controlled wipe method.
• Spot cleaning where squirt bottles and inconsistent hand-wetting create variability.

• 99% IPA / 1% DI water blend supports fast drying and lower water carryover on sensitive surfaces.
• Sealed edges help control loose fibers and reduce edge fray during aggressive wipe-downs.
• Heavy-weight knit construction (built for abrasion resistance and repeated passes on real-world surfaces).
• Tub format reduces open handling versus pouring solvent onto dry wipes, improving repeatability.
• Low-linting intent (and a practical reminder: nothing is truly lint-free—technique and surface condition still decide the outcome).

FS-ULT70-99.99 is described as a 100% virgin polyester wipe with four heat-sealed edges designed to reduce loose fibers and fiber contamination. The wipe is engineered to be abrasion resistant and absorbent, with a tough knit that holds together when wiping rougher fixtures or edges. It is supplied presaturated with 99% isopropyl alcohol and 1% DI water.

The table below consolidates SKU-level details that impact day-to-day performance (how it wipes, how it dries, and how it behaves on edges and corners). Where sources differ, both statements are preserved.

Attribute	FS-ULT70-99.99 (Tub)
SOSCleanroom SKU	FS-ULT70-99.99 TUB
Wipe size	9" x 9"
Saturation	99% IPA / 1% DI water
Material	Virgin polyester (knit)
Edge type	Heat-sealed edges (sealed edges)
Basis weight	140 gsm (typical)
Thickness	0.48 mm (typical)
Cleanroom class statement	SOS listing: ISO Class 3–4 (Class 1–10). Manufacturer listing: ISO Class 3–5 (Class 1–100).
Sterility	Non-sterile (as listed by manufacturer)
Packaging	30 wipes per tub; 12 tubs per case (360 wipes)
Availability (SOS)	7–10 business days (posted)

Cleanliness numbers are often treated like a spec, but many manufacturers publish them as typical values from standardized test methods. Use the tables below for process design and comparison, then align your acceptance criteria to your internal quality system, surface risk, and verification method.

Ion	Typical value	Test method reference
Chloride (Cl)	0.000174	IEST-RP-CC004.3 (Sec 7.2.2)
Nitrates (NO3)	0.000019	IEST-RP-CC004.3 (Sec 7.2.2)
Nitrite (NO2)	0.000025	IEST-RP-CC004.3 (Sec 7.2.2)
Sulphate (SO4)	0.000083	IEST-RP-CC004.3 (Sec 7.2.2)
Sodium (Na)	0.000312	IEST-RP-CC004.3 (Sec 7.2.2)
Potassium (K)	0.000227	IEST-RP-CC004.3 (Sec 7.2.2)
Magnesium (Mg)	0.000049	IEST-RP-CC004.3 (Sec 7.2.2)
Calcium (Ca)	0.000021	IEST-RP-CC004.3 (Sec 7.2.2)

Extractant	Typical value	Test method reference
DI water extractant	0.14	IEST-RP-CC004.3 (Sec 7.1.2)
IPA extractant	0.52	IEST-RP-CC004.3 (Sec 7.1.2)

• SKU (SOS): FS-ULT70-99.99 TUB
• Unit format: Tub/canister; 30 wipes per tub.
• Case format: 12 tubs per case (360 wipes).
• Sterility: Non-sterile (manufacturer listing).
• Country of origin (manufacturer statement): Made in the USA.
• Traceability note: If your QA program requires incoming inspection documentation or lot capture, standardize how you record: supplier name, SKU, receiving date, lot/identifier (if listed on unit label), and where the tub is staged/used.

A presaturated wipe helps standardize wetness, but outcomes still depend on fold discipline, stroke control, and how often you flip to a clean face. The quick, shop-floor checklist below keeps cleaning consistent across shifts.

• Stage the job: Identify the “clean-to-dirty” direction before you touch anything. Remove loose debris first (do not grind it in).
• Open tub briefly: Pull one wipe and close the lid immediately to reduce solvent loss and variability.
• Fold for control: Quarter-fold into a flat pad; keep edges tucked so you wipe with a stable face, not a flapping corner.
• One direction, overlapping passes: Use straight strokes with 20–30% overlap. Avoid circular scrubbing unless the surface and residue demand it.
• Use “clean face” rules: Flip to a fresh face as soon as you see streaking, drag, or visible pickup. If all faces are used, discard.
• Edge awareness: On sharp corners or burr-prone fixtures, lower pressure and increase wipes-per-area to avoid snagging.
• Drying expectation: Allow the surface to air dry; do not immediately over-wipe a half-dry film (that often re-deposits).
• Safety reality: 99% IPA is flammable. Follow your site chemical hygiene plan, keep away from ignition sources, and use appropriate ventilation and PPE for your environment.

• Streaking or haze: Often caused by overworking a drying film or using a saturated face too long. Flip sooner; reduce re-wiping.
• Re-deposition: Wiping “dirty-to-clean” or using circular motions can spread residues. Lock in a direction and overlap pattern.
• Snagging/tearing: Sharp fixture edges, burrs, or aggressive pressure. Reduce pressure; inspect fixtures; use more wipes per area.
• Inconsistent wetness: Lid left open, wipes staged outside the tub, or long dwell time in low-humidity areas. Pull-and-close discipline matters.
• Fiber/particle complaints: Even low-linting designs can look “dirty” if the surface is rough, oxidized, or shedding. Confirm the surface condition before blaming the wipe.

If you are qualifying equivalents, keep the comparison anchored on: material construction (knit vs nonwoven), edge sealing method, packaging (tub vs pouch), and the IPA/DI concentration.

• Texwipe Vectra® QuanSat™ TX1082 (pre-wetted cleanroom wipers) — sealed-border polyester wiper option available with 100% IPA; commonly evaluated when teams want a tightly controlled pre-wet format.
• Berkshire SatPax® MicroSeal®-VP (9" x 9" 100% IPA option) — zipper pouch format and ultrasonically sealed edge approach; often considered for the most critical wipe-down programs.

FS-ULT70-99.99 is positioned for high-sensitivity wipe-downs where teams want the control of a presaturated format and the durability of a heavy-weight knit. The sealed edges are a practical choice when you cannot afford edge fray on corners, rails, and fixture transitions. For programs under quality oversight (pharma, medical device, microelectronics), the most defensible approach is to: (1) define where 99% IPA is appropriate versus 70% blends, (2) set a wipe technique standard (fold/stroke/flip rules), and (3) verify residues and cleanliness using your internal acceptance criteria and documented methods.