Black's Anti-static Cleanroom Swabs are very good substitute for ITW Texwipe Swabs or Huby Swabs. They are constructed from compressed, 100 Ppi (Z) open-cell polyurethane foam or Polyester or Microfiber that is Free from organic contaminants such as silicone, amides or DOP. The foam Is thermally bonded to the handle, thus, eliminating the use of Contaminating adhesive or coatings. Laundered and packed under an ISO Class 4 Cleanroom, the foam exhibits low particulate and ionic content. It has excellent compatibility with most common solvents including Acetone as well as excellent absorbency and solvent-holding capacity.