Swabs and Wipes

Sterile Foam Swab WDF742


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Whitedrop’s Sterile Foam Swab WDF-742 features a 100 PPI open cell polyurethane foam head and a 100% polypropylene handle. The foam head possesses a good solvent capacity and good cushioning. Our foam cleaning swab WDF-742 is processed in a class 10 cleanroom facility. Our thermal bond technique enables no adhesive contamination. It is free from organic contaminants such as silicone and amide. It is widely used for microelectronic, semiconductor industries.


Industries used in:









-Hygiene Testing

-Fluid Handling




-Arts & Crafts





Compatible with:


-Optical Devices


-Magnetic Tape Devices

-Computer Keyboards


-Circuit Boards

-Plasma/LCD Displays

-A/C Vents





– Model Number: WDF-742

– Head Material: 100 PPI Polyurethane Foam

– Handle Material: 100% Polypropylene

– Handle Colour: Green (White, Black, Blue is available upon request)

– Standards Met: Class 10 ISO Class 4 Certified


Dimension Chart:


– Compact foam head, rigid and round core handle

– 100 PPI Open-cell polyurethane foam head

– Thermal bond technique eliminate adhesive contamination

– Excellent absorbent capacity for solvents and solutions

– Soft and non-abrasive

– Low non-volatile residue(NVR), ion content level

– Good trapping capacity for particles

– ESD safe handle is available upon request

– Durable

– Absorbent

– Multi Functional

– Precision Cleanin

– Clean sensitive equipment

– Minimum lint or particle generation

– Can be stored for up to 2 years

– Applying lubricants and other liquids



– Ideal for cleaning confined areas

– Removing flux residue from printed circuit boards

– Clean optic and lens surfaces

– Removing adhesive residue or excess glue

– Picking up fine powders

– Good for general purpose cleaning



500 swabs / bag

5 inner bags of 100 swabs


All swabs are packaged in a vacuum bag to prevent contamination.


Contamination Characteristics:

PropertyMeasurementTest Method*
Nonvolatile Residue(NVR)25,000 or lessTM10: Procedure for Determining the Nonvolatile Residue (NVR) Extractable from Swabs in a Given Solvent
IPA Extractant0.02 mg/swab
IonsTM12: The Determination of Ions in Wipers and Other Materials by Capillary Ion Analysis (CIA)
Chloride<0.01 μg/swab
Sulfate<0.01 μg/swab
Nitrate<0.01 μg/swab
Phosphate<0.01 μg/swab
Fluoride<0.01 μg/swab
Potassium<0.01 μg/swab
Calcium<0.01 μg/swab
Sodium<0.01 μg/swab
Magnesium<0.01 μg/swab



ESD Characteristics:

Handle Resistivity: 108 – 109 Ohms/Sq (Optional)

Additional Information
Pack Size

500 Pcs, 1000 Pcs

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