Sterile Foam Cleaning Swab — WDF-746
£7.99 / week – £63.99
Whitedrop’s Foam Swab WDF-746 features a medium round foam head and a firm handle. This Swab Stick is cushy and absorbent while the rigid handle offers firm support so you can clean tough residues. These swabs are made with quality in mind. The absorbent foam head is therma~l bonded which means no adhesives and with a class 10 cleanroom facility, you are assured the highest level of cleanliness. Our Foam cleaning swab sticks are the perfect choice for removing oil, residue, or ink from Thermal Printer Printheads & Inkjet Printer Cap Stations. Industrial applications include printing, optical, biotech, pharmaceutical, woodworking, veterinary, and computer engineering.
Whitedrop’s Foam Swab WDF-746 features a medium round foam head and a firm handle. This Swab Stick is cushy and absorbent while the rigid handle offers firm support so you can clean tough residues. These swabs are made with quality in mind. The absorbent foam head is therma~l bonded which means no adhesives and with a class 10 cleanroom facility, you are assured the highest level of cleanliness. Our Foam cleaning swab sticks are the perfect choice for removing oil, residue, or ink from Thermal Printer Printheads & Inkjet Printer Cap Stations. Industrial applications include printing, optical, biotech, pharmaceutical, woodworking, veterinary, and computer engineering.
Features
- Medium, round 100PPI polyurethane foam head
- Rigid 100% polypropylene handle
- Low non-volatile residue (NVR)
- Adhesive-free thermal bonding
- Easily absorbs solvents
- Won’t scratch surfaces
- Multifunctional
- Precision tool
- Low ion content level
- Durable
- ESD safe handle is available upon request
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Choose the Right Cleaning Swab
Precision Cleaning Guide
Laboratory Cleaning Guide
FAQs
Foam swabs are generally the preferred option for the most demanding precision cleaning tasks, as they offer excellent solvent resistance and near-zero lint. Polyester swabs are a strong all-round choice for laboratory and general precision work.
Yes. Our foam swabs are suitable for ISO Class 3–7 cleanrooms, while our polyester swabs are suitable for ISO Class 5–8 environments.
Yes. Both our foam and polyester swabs are designed to be used with Isopropyl Alcohol (IPA) and other common cleaning solvents. Always check individual product specifications before use.
Yes. Bulk pricing is available for businesses purchasing larger quantities, and Trade Account customers can request personalised quotations.
Absolutely. Our AI Product Specialist can recommend the right swab for your industry and task, or you can contact our team directly for personal advice.
Recommended Applications
Recommended Applications
- Safely cleans computer keyboards, optical and magnetic tape devices and electronic components
- Safely cleans and polishes optical surface, lenses, photographic equipment, fiber optic connectors and instruments
Suitable for
- Printers
- Optical Devices
- Cameras
- Magnetic Tape Devices
- Computer Keyboards
- Typewriters
- Circuit Boards
- Plasma/LCD Displays
- A/C Vents
Product Specifications
| Model Number | WDF-746 |
| Head Material | 100 PPI Polyurethane Foam |
| Handle Material | 100% Polypropylene |
| Handle Colour | Green |
| Standards Met | Class 10 ISO Class 4 Certified |
Dimension Chart

Contamination Characteristics
| Property | Measurement | Test Method |
|---|---|---|
| Nonvolatile Residue (NVR) | 25,000 or less | TM10 |
| IPA Extractant | 0.02 mg/swab | TM10 |
| Chloride | <0.01 μg/swab | TM12 |
| Sulfate | <0.01 μg/swab | TM12 |
| Nitrate | <0.01 μg/swab | TM12 |
| Phosphate | <0.01 μg/swab | TM12 |
| Fluoride | <0.01 μg/swab | TM12 |
| Potassium | <0.01 μg/swab | TM12 |
| Calcium | <0.01 μg/swab | TM12 |
| Sodium | <0.01 μg/swab | TM12 |
| Magnesium | <0.01 μg/swab | TM12 |
TM10: Procedure for Determining the Nonvolatile Residue (NVR) Extractable from Swabs in a Given Solvent
TM12: The Determination of Ions in Wipers and Other Materials by Capillary Ion Analysis (CIA)
ESD Characteristics
Handle Resistivity: 108 – 109 Ohms/Sq (Optional) — please contact our team or select the ESD-safe option if required for your application.
Packaging Details
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Vacuum-sealed packagingAll swabs are packaged in a vacuum bag to prevent contamination.
Looking for larger pack sizes or case quantities? Request bulk pricing or speak to our team about setting up an ongoing supply arrangement.

