In real cleanroom cleaning, the “failure” is rarely obvious. You pass visual inspection, then a day later the haze returns. Or a coating looks fine until it dries, and a faint streak becomes a yield hit. In optics, sensors, and high-resolution assemblies, that defect pathway is often a combination of solvent evaporation behavior, micro-residue redistribution, and contact mechanics at the surface.

TX761MD is designed for those moments: you need a small cleaning face, a long handle that keeps gloves away from the work zone, and a textile that lifts fine particulates while minimizing streak formation on scratch-sensitive surfaces. It is a low-linting tool when used correctly — and nothing is truly lint-free under every pressure, edge condition, or solvent load.

TX761MD is used for precision spot cleaning and controlled residue removal in constrained access points where wipes cannot maintain consistent contact. Microdenier polyester knit is selected when fine particle pickup and streak management matter on sensitive surfaces.

• Detail cleaning of grooves, tracks, slots, intersecting surfaces, joints, and recessed features.
• Applying and removing lubricants, adhesives, and process solutions in controlled environments.
• Solvent/solution cleaning (per your SOP) when you need a small, repeatable contact patch.
• Pickup of fine powders/particulates where a knit head can improve “grab” compared to foam.

• Microdenier knit for sensitive surfaces: built for streak-free cleaning behavior on scratch-sensitive zones when technique is controlled.
• Thermal bond construction: eliminates adhesive as a contamination variable at the bond line.
• Long handle = better contamination discipline: helps keep gloves, sleeves, and wrist motion away from the critical cleaning area.
• Published cleanliness characterization: typical ions and NVR values support background-risk thinking, troubleshooting, and lot-aware investigations.
• Packaging controls and traceability: silicone-free, reclosable bag + lot coding supports consistent floor control and root-cause investigations.

TX761MD uses a 100% polyester knit microdenier head thermally bonded to a 100% virgin polypropylene handle. The microdenier textile is positioned for fine particulate pickup and streak control on sensitive surfaces, while thermal bonding removes adhesives from the build.

• Head material: 100% polyester knit (microdenier series).
• Bond mechanism: thermal (no adhesive).
• Handle: polypropylene (100% virgin polypropylene), long format for reach and better glove-off-zone control.
• Contamination-control note: Low-linting outcomes depend on pressure, edge loading, and surface condition; no swab is truly lint-free across all use conditions.

The dimension set on TX761MD is doing a practical job: a small cleaning face to stay “inside the feature,” plus a long handle that lets operators keep a stable angle without bringing hands into the airflow above the work. On many lines, that glove-contact avoidance is the biggest single reduction in random recontamination.

Attribute	TX761MD (this SKU)
Head width	6.8 mm (0.268")
Head thickness	2.8 mm (0.110")
Head length	16.8 mm (0.661")
Handle material	Polypropylene (100% virgin polypropylene)
Handle width / thickness	3.2 mm (0.126") / 3.2 mm (0.126")
Handle length	146.2 mm (5.755")
Total swab length	162.5 mm (6.398")
Bond type	Thermal (no adhesive)
Packaging	100 swabs / reclosable bag; 8 bags / case (800 swabs / case)
Packaging controls	Reclosable, silicone-free bag; lot coded for traceability and quality control
Compatibility note	Compatible with QAC (quaternary ammonium chloride) cleaners and disinfectants

The tables below summarize typical (manufacturer-reported) contamination characterization for TX761MD. These are not specification limits; treat them as a baseline for background contribution, then confirm with your actual solvent, wetness level, evaporation behavior, and surface energy. If you are working near a detection threshold or troubleshooting a defect signature, run blanks and lot-aware checks.

Ion	Typical level (µg/swab)
Calcium	0.08
Chloride	0.10
Fluoride	0.07
Magnesium	0.03
Nitrate	0.11
Phosphate	0.12
Potassium	0.09
Sodium	0.17
Sulfate	0.12

Extractant	Typical NVR (mg/swab)
DI water (DIW)	0.06
Isopropyl alcohol (IPA)	0.03

• Packaging: 100 swabs per reclosable bag; 8 bags per case; 800 swabs per case.
• Packaging controls: reclosable, silicone-free bag; lot coded for traceability and quality control.
• Sterility: supplied non-sterile. The series references sterile swabs as available upon request; if sterility is a requirement, lock it in your SOP and qualify before adoption.
• Autoclave note: described as autoclave safe for use in sterile environments and processes; validate cycle parameters, packaging, and post-sterilization handling to your facility method.
• Shelf life: 5 years from date of manufacture.
• Practical identity cue: trademarked light-green handle with “TEXWIPE” embossed on the handle supports receiving and floor-control identification (traceability cue).
• Country of origin (manufacturer statement): Made in The Philippines.

TX761MD performs best when you treat it like a controlled tool, not a “tiny wipe.” Control wetness, keep the paddle face in contact, and rotate to a clean face before the head loads. Reclosable packaging only helps if operators reseal it immediately and keep the open bag out of high-traffic airflow zones.

• Set a wetness rule: if pre-wetting is allowed, target “uniformly damp,” not dripping. Excess solvent increases streaking and creates tide marks as it evaporates.
• Use straight strokes first: single-direction passes with overlap typically lift better than circular scrubbing, especially on coatings and polished surfaces.
• Rotate with intent: after 3–6 strokes on a small feature (or sooner if drag increases), rotate to a clean face. Stop when smearing replaces pickup.
• Avoid edge loading: keep the paddle face flat. Pressing with the edge can increase fiber generation and create faint streak lines even with low-linting materials.
• Keep hands off the zone: use the long handle to maintain a stable angle and keep gloves and sleeves out of the work envelope.
• Do not re-dip a used swab: reintroduces captured residue/particles into your solvent source and contaminates the next cleanout.
• Validate solvent compatibility: IPA is common; QAC disinfectants are noted as compatible. Confirm surface/coating compatibility and residue limits within your quality system.
• Troubleshooting discipline: if streaks persist, isolate variables: solvent purity, wetness, stroke speed, and consumable lot. Change one variable at a time.

• Over-wetting + slow strokes: leaves tide marks and “re-deposits” residues as solvent evaporates.
• Circular scrubbing on coatings: raises abrasion risk and often redistributes contamination instead of lifting it.
• Edge loading the knit: increases snag risk and can produce faint streak lines or fiber transfer on sharp edges.
• Backtracking with a loaded head: recontaminates the area you just cleaned.
• Bag left open on the bench: airborne loading turns the swab into the contamination source; reseal immediately.

In this class (long-handle knit swabs for precision detailing), meaningful comparisons are construction mechanism (thermal bond vs. adhesive), published contamination characterization, packaging controls, and tolerance consistency — the items that determine whether a method remains stable across lots.

• Berkshire Lab-Tips® knitted polyester long-handle cleanroom swabs (comparable size class): evaluate published background data and packaging/lot discipline for investigation-ready programs.
• Puritan PurSwab® cleanroom polyester knit long-handle swabs (comparable size class): compare head geometry and handling feel in your features; confirm documentation availability for cleanliness characterization.
• Other private-label knit swabs: some match geometry but lack stable characterization and traceability; qualify carefully if your defects or audits are sensitivity-driven.

TX761MD fits precision cleaning tasks where access is constrained, the surface is sensitive, and outcomes depend on repeatable contact mechanics. It is also a practical choice in programs using QAC disinfectants and in workflows where a long handle reduces glove contact risk in the cleaning zone.

SOSCleanroom supports this use-case through our established working relationship with ITW Texwipe — emphasizing continuity of supply and documentation discipline so qualified materials remain stable across replenishment cycles. Fast shipping and responsive support reduce last-minute substitutions that can quietly change wetting behavior, streak outcomes, and investigation baselines.

• SOSCleanroom product page (TX761MD): https://www.soscleanroom.com/product/swabs/texwipe-tx761md-long-medium-head-microdenier-cleanroom-swab/
• ITW Texwipe manufacturer product page (TX761MD): https://www.texwipe.com/small-microdenier-tx761md
• ITW Texwipe Technical Data Sheet: Microdenier Swab Series, Polyester Knit, US-TDS-064 Rev. 09/21 (physical characteristics, packaging, shelf life, COO, and typical contamination characterization): https://www.texwipe.com/images/uploaded/documents/Swabs/Texwipe-Microdenier-Swabs-TDS.pdf
• SOS-hosted PDF copy (primary stable reference): Microdenier Series Technical Data Sheet (TX714MD / TX758MD / TX761MD): https://www.soscleanroom.com/content/texwipe_pdf/714md%20758md%20761md.pdf
• ISO (as applicable): https://www.iso.org/standard/53394.html
• FDA (as applicable): https://www.fda.gov/
• ASTM (as applicable): https://www.astm.org/
• IEST (as applicable): https://www.iest.org/