Anti-static Cleanroom Foam Swab is constructed from compressed 100 PPE (Z) open-cell polyurethane foam or 100 PPE (Z) closed-cell polyurethane foam and 100% virgin polypropylene handles. Both foams are free from organic contaminants such as silicone, amides, or phthalate esters. The ESD-safe handle is compact and will not contribute to particulate or organic contamination.