Knitted Polyester Cleanroom Swabs / Applicators are the perfect tool for lint-free, non-abrasive work in cleanrooms, labs, and other critical environments. Durable and effective, these polyester-tipped cleanroom swabs are safe for work in medical device manufacturing, optics, electronic, computer and semiconductor environments. While being accessible in a large variety of sizes and lengths, these swabs are compatible to work with acetone, organic solvents and other various cleanroom solvents. These are ideal for work that requires nonvolatile residue, while dealing with sensitive materials.