Sterile Foam Cleaning Swab WDF742 | Precision Cleaning
£4.16 – £34.03Price range: £4.16 through £34.03 ( ex. VAT )
Whitedrop Sterile Foam Swab WDF-742 has a compact round foam-tipped head and firm handle for controlled cleaning of small areas. The adhesive-free thermal-bonded foam is designed to absorb solvents and remove oil, residue or ink without scratching sensitive surfaces. It is suited to printers, electronics, optical equipment and other precision-cleaning tasks.
Whitedrop Sterile Foam Swab WDF-742 has a compact round foam-tipped head and firm handle for controlled cleaning of small areas. The adhesive-free thermal-bonded foam is designed to absorb solvents and remove oil, residue or ink without scratching sensitive surfaces. It is suited to printers, electronics, optical equipment and other precision-cleaning tasks.
Features
- Compact, 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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Precision Cleaning Guide
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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
- Ideal for cleaning hard-to-reach areas
- Cleaning micro mechanical parts and accessories
- Removing excess ink from inkjet cartridges of printers
- Removing dust, particles and flux residues from printed circuit boards
- Compatible with most solvents
- For general use cleaning
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-742 |
| 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.

