The Technical Vault
By SOSCleanroom
ULP-Treated Blend Wipers for Electronics Lines: Why TX1109 TechniCloth II Balances Sorption and Low Particle Generation in Daily ISO 5–8 Wiping
Last reviewed: Jan. 1, 2026 | Audience: contamination control, cleanroom operations, electronics manufacturing, quality
Texwipe TX1109 TechniCloth II (9" × 9") is a dry, hydroentangled cellulose/polyester cleanroom wiper selected when the job is absorbency-driven (spills, wipe-downs, solution pickup) but the program still needs a controlled contamination profile and repeatable performance.
Where TX1109 differentiates itself versus many blended wipes is the ULP (ultra-low particulate) treatment and the way it is packaged for controlled introduction. It is positioned for critical environments where low particle generation and high absorbency are both primary requirements—particularly in electronics-related workflows such as integrated circuit, printed circuit board, and electronic components fabrication.
What it’s for
TX1109 is best used for general wiping, spill control, and cleaning/polishing precision components when the facility wants faster wet-out and higher pickup than all-polyester knits typically provide, while staying inside a documented cleanroom consumable family. It is also commonly used for bench, cart, fixture, and tool wipe-downs where operators need a wiper that holds together under wet wiping forces.
Decision drivers
TX1109 earns its place when your program needs absorbency without letting a “utility wipe” become the uncontrolled variable:
- Substrate and construction: hydroentangled, nonwoven blend of 55% cellulose / 45% polyester for fast wet-out plus strength in use.
- ULP treatment: positioned to reduce particle generation compared with earlier TechniCloth constructions, improving suitability for more particle-sensitive work.
- Edge strategy: cut edge format intended for routine wiping and controlled spill pickup where sealed-edge is not the gating requirement.
- Packaging discipline: bag-within-a-bag, solvent-safe cleanroom packaging to support controlled introduction and staging.
- Quality posture: statistical quality control and lot-to-lot traceability help with change control and investigations.
- Right-size format: 9" × 9" supports stable quarter-folding and aggressive face rotation without excessive overreach.
Materials and construction – explained like an engineer
“Cellulose/polyester blend” is not a single performance category. The practical behavior comes from (1) how the fibers are locked together (hydroentanglement), and (2) how the wipe responds when it is wet, loaded, and pushed across real surfaces. TX1109’s hydroentangled structure is designed to deliver bi-directional strength, so the wipe is less prone to tearing and fiber spikes when operators change direction, increase pressure, or wipe textured hardware.
The blend is deliberate: cellulose improves wetting and spill pickup (fast absorption, higher capacity), while polyester improves wet strength and handling stability. The ULP treatment is intended to further reduce particulate contribution—important when blended wipes are used closer to product contact zones in electronics manufacturing.
Terminology note: TX1109 is engineered for low-linting performance; no wiper is truly “lint-free” in every process condition.
Specifications in context
- Size: 9" × 9"
- Material: cellulose/polyester blend
- Edge: cut edge
- Packaging: 300 wipers per bag (double bagged); 10 bags per case
- Use environments (listing posture): ISO Class 5–8 are presented on the SOSCleanroom listing; manufacturer application notes commonly position TX1109 for ISO Class 6–7 use. Final suitability depends on your surface sensitivity, wiping force, chemistry, and acceptance criteria.
Program note: If your SOP treats “ISO class compatibility” as a qualification gate, document the specific task placement (spill pickup vs. product-adjacent wiping vs. final-pass), then confirm with your own process evidence (visual, particle, residue, or functional performance as applicable).
Cleanliness and performance metrics
In most programs, wipe qualification comes down to three risk buckets: releasables (particles/fibers), residues (NVR), and ions. TX1109 has published typical values across those categories and should be treated as a qualification starting point—not a per-lot contractual specification unless explicitly stated.
- Sorption (spill behavior): typical sorptive capacity 260 mL/m²; typical sorptive rate 1.2 seconds.
- Releasables: typical LPC (>0.5 µm) 37 × 106 particles/m²; typical fibers (>100 µm) 40,000 fibers/m².
- NVR: typical 0.02 g/m² (IPA extractant); typical 0.03 g/m² (DI water extractant).
- Ions (typical): sodium 40 ppm, potassium 5 ppm, chloride 24 ppm.
Rule of thumb: When absorbency and fast wet-out are the gating need, a controlled blend wipe like TX1109 can reduce rework and time-to-clean. When edge control or the lowest possible background is the acceptance driver, the technical step-up is typically a sealed-edge polyester knit. When wetness repeatability is the constraint, consider a controlled pre-wetted system.
Best-practice use
TX1109 performs best when technique prevents the most common real-world failure: turning “pickup” into “redistribution.”
- Quarter-fold consistently: create multiple clean faces; rotate faces early rather than “making one face work.”
- Spill logic: blot/pickup first, then finish with single-direction, overlapping strokes using fresh faces.
- Wetness control: aim for damp when using solvents/solutions; avoid over-wetting that can pool in seams and drive streaking after dry-down.
- Surface discipline: reduce pressure on sharp edges or textured hardware; if abrasion dominates, consider a more durable knit architecture.
- Handling controls: stage bags at point-of-use, open only what you need, and keep exposed wipes protected from incidental touch contamination.
Common failure modes — and how TX1109 helps
A blended wiper becomes a contamination source in predictable ways: overworking a loaded face, scrubbing abrasive edges until fibers spike, and using “more wetness” to compensate for technique. TX1109’s hydroentangled strength and ULP treatment support lower particulate contribution in use, but the remaining controls are procedural: face rotation, directional strokes, controlled wetness, and early discard.
Closest comparators
The most defensible comparisons are to other cleanroom nonwoven cellulose/polyester blends intended for similar absorbency-driven wiping tasks.
Comparable blended nonwoven cleanroom wipes (cellulose/polyester, hydroentangled) are appropriate peers when you are evaluating absorbency, wet strength, and published particle/NVR/ion posture. Compare on the metrics that map to your defect mechanism: particles/fibers if visual/particle excursions drive rework; NVR if haze/film after dry-down is the complaint; ions if corrosion, ECM, or high-impedance electronics sensitivity is the risk.
If your investigation points to edge-driven fibers or stringers, the appropriate “step-up” comparator is typically a sealed-edge polyester knit. If your constraint is wetness repeatability, the right comparator is a pre-wetted system with controlled saturation and packaging designed to limit evaporation and handling variability.
Where TX1109 fits in a cleanroom wiping program
TX1109 is a strong choice as the absorbency-forward daily driver in ISO 5–8 controlled environments where spill pickup, solution handling, and fast wipe-downs are routine—but the program still requires controlled cleanliness characteristics and repeatable sourcing. It fits especially well in electronics manufacturing support cleaning where both wet pickup and particulate control matter. When the risk shifts to the most defect-sensitive surfaces or when edge control becomes the acceptance driver, the technical step-up is typically a sealed-edge knit polyester wipe. When solvent loading repeatability becomes the constraint, the step sideways is a validated pre-wetted system.
Source basis
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SOSCleanroom product page: “Texwipe TX1109 TechniCloth II 9" × 9" Cellulose and Polyester Cleanroom Wiper”
(SKU/packaging, ISO class listing, features/benefits, ULP positioning, applications).
https://www.soscleanroom.com/product/wipers/texwipe-tx1109-technicloth-ii-9-x-9-cellulose-and-polyester-cleanroom-wiper/
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ITW Texwipe datasheet: “TechniCloth® II Wipers” (construction, ULP posture, typical performance and contamination characteristics for TX1109 family).
https://www.soscleanroom.com/content/texwipe_pdf/1109%201112%201118.pdf
Source: SOSCleanroom | Last reviewed: Jan. 1, 2026
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