BCR MOPS Berkshire's cleanroom mop system is designed for both the easy removal of contamination from floors, and for the distribution of disinfectants. Each mop features looped-end fan-tail construction to minimize particle generation. BCR MOP 4 - 100% knitted polyester - Laundered and packaged in an ISO Class 4 cleanroom - Lot number on each pack ensures traceability - Chemical and abrasion resistant - Low particulate and fibers - Durable - Beta - Gamma - Autoclave.