Swabs and Applicators
Coventry™ cleanroom swabs and applicators keep contamination out of your process, improve yield, and perform consistently, shipment to shipment. To manufacture a Coventry swab, we start with engineered clean materials. Polyester swab and wipe components are laundered first in our Class 10 (ISO Class 4) cleanroom. Coventry has a wide variety of choices to meet your most demanding applications. The wrapped swab, uniquely designed with no seams or edges, prevents scratching of delicate surfaces. Also included in the product line are sealed fabric, sealed foam, and static control.
Chemtronics swabs are engineered for controlled environments, light industrial, and electronic rework and repair applications.
Fiber Optic Applications
What is the best swab to use for high temperature applications, like cleaning out a hot mold?
The head of a foam swab with degrade, tackify and breakdown around 275°F. The polypropylene handle will melt around 320°F. A better option to resist the degrading effect of the high temperatures is a polyester swab head on a nylon handle such as 51353, 51121 or 52121. 52121 would probably be the best, because it’s 6 inches long which keeps more safe distance between the hot mold and the user. It should be able to handle temperatures approaching 500°F.
Are swabs available for cleaning static sensitive electronics?
Yes, Chemtronics offers a full line of ESD swabs. They include foam, knit polyester, or knit microfiber heads with static dissipative handles. The proprietary handle material has surface resistivity of 1.0 x 10_10 ohms/sq, and will dissipate 99% of (5 kV) charge in 0.5 seconds. This avoids static generation, and can dissipate a charge when the user is grounded.
Are Q-tips / cotton bud swabs lint free?
No, cotton bud swabs (aka Q-tips) can’t be considered lint-free. Cotton tends to lead behind threads and particulates. Open cell polyurethane foam swabs are a common, very clean replacement for cotton. If harsh solvents are being used on the swabs, or even more cleanliness is needed, knit polyester or microfiber swabs are an excellent choice.
What is a foam swab? / Why should I use a foam swab?
While cotton bud swabs (aka Q-tips) are commonly used for all kinds of precision cleaning, foam swabs are commonly used to reduce contamination from cotton threads and particulates. Foam swabs are usually made of open cell polyurethane for maximum cleanliness and absorbency.
What is a sterile swab?
Sterile swabs are free from bacteria or other living microorganisms. Common methods for sterilization include autoclaves, ETO (ethylene oxide gas), and Gamma irradiation. Sterile swabs are generally used for biological sample collection to avoid sample contamination, and for medical use to avoid infection.