Contec PN-44, Polynit Textured No-Run Polyester Knit Wipes, 4" x 4" (Case of 4800)
Contec PN-44 Polynit® — Textured No-Run Polyester Knit Cleanroom Wipes | 4" × 4" | Case of 4,800
Contec Polynit® PN-44 is a premium 100% no-run interlock knit polyester cleanroom wiper engineered for ISO Class 5 through ISO Class 7 controlled environments. Laundered to extremely low levels of particles and fibers, the textured knit surface provides superior wiping performance on sensitive surfaces without scratching. The knife cut soft edge and solvent-compatible polyester construction make PN-44 ideal for critical cleaning in pharmaceutical, semiconductor, biomedical device, and microelectronics manufacturing.
Case of 4,800 wipes (300 wipes/bag, 16 bags/case). 4" × 4" format.
Specifications
| Part Number | PN-44 |
|---|---|
| Product Line | Polynit® |
| Material | 100% Polyester |
| Construction | No-Run Interlock Knit |
| Surface Texture | Textured knit |
| Edge Type | Knife Cut (soft edge) |
| Wipe Type | Dry wipe (solvent-compatible) |
| Sheet Size | 4" × 4" (102 mm × 102 mm) |
| Case Quantity | 4,800 wipes (300/bag, 16 bags/case) |
| ISO Classification | ISO Class 5 (Class 100) – ISO Class 7 (Class 10,000) |
| Sterility | Non-sterile (laundered) |
| Manufacturer | Contec, Inc. |
Key Features
- 100% no-run interlock knit polyester — will not unravel or shed fibers at cut edges; maintains integrity throughout use
- Textured knit surface — enhanced mechanical wiping action removes particles, residues, and contamination more effectively than smooth wipers
- Knife cut soft edge — safe on scratch-sensitive optical, semiconductor, and precision surfaces; no sealed or bonded edge to introduce adhesive contamination
- Laundered to ultra-low particle levels — processed in Contec's controlled laundry to ISO Class 5/7 cleanliness standards; extremely low particle and fiber counts
- Solvent compatible — suitable for use with IPA, acetone, methanol, and other common cleanroom solvents for wet wiping applications
- Compact 4" × 4" format — ideal for detailed surface wiping, component cleaning, and precision tool maintenance in tight workspaces
Industries & Applications
- Semiconductor manufacturing — wafer handling area cleaning, tool surface wiping, and contamination control in ISO Class 5–7 fabs
- Pharmaceutical manufacturing — surface cleaning and disinfectant application in GMP-compliant cleanrooms and filling suites
- Biomedical device manufacturing — precision cleaning of device components, tooling, and work surfaces in controlled environments
- Microelectronics and PCB assembly — flux residue removal, surface preparation, and general contamination control
- Optics and photonics — delicate surface wiping where scratch-free, low-particle performance is critical
- Aerospace and defense — critical surface cleaning and solvent wiping in controlled manufacturing environments
Frequently Asked Questions
What is a "no-run" knit wiper and why does it matter?
A no-run knit construction means the interlock knit polyester fabric will not unravel or ladder (run) when cut or if a yarn is broken during use. This prevents loose fibers and threads from contaminating clean surfaces — critical in ISO-classified environments where fiber counts are tightly controlled.
What is the difference between the PN-44 and a sealed-edge wiper?
The PN-44 uses a knife cut edge rather than a heat-sealed or laser-sealed edge. Knife cut edges on no-run knit polyester are soft and safe for scratch-sensitive surfaces. Sealed edges introduce a hardened border that can scratch delicate surfaces and may contribute adhesive contamination. For cleanroom applications where surface integrity is critical, knife cut no-run wipers are often preferred.
Can the PN-44 be used wet with solvents?
Yes — PN-44 is compatible with common cleanroom solvents including isopropyl alcohol (IPA), acetone, methanol, and other standard cleanroom cleaning agents. Always verify chemical compatibility with your specific solvent and application before use in critical processes.
What ISO cleanroom class is the PN-44 rated for?
The Contec PN-44 is rated for ISO Class 5 (Class 100) through ISO Class 7 (Class 10,000) environments. It is suitable for most semiconductor, pharmaceutical, and medical device cleanroom applications within this classification range.
How many wipes are in a case and how are they packaged?
Each case contains 4,800 wipes: 300 wipes per bag, 16 bags per case. The 4" × 4" compact format makes them suitable for detailed cleaning tasks and fits standard cleanroom wipe dispensers.
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