RS Cleanroom Facemasks with Ties. These cleanroom facemasks with ties are processed and packaged in a cleanroom environment to maximise particle reduction. Features:. Lint-free and hypoallergenic to prevent skin irritation Ultra-low lint Solvent-safe Extra-wide facemasks for maximum coverage Tie-type fastening offering greater flexibility for individual adjustment. Applications:. Medical device Semi-conductor Microelectronics Pharmaceutical Aerospace Food processing