Durable, 100% knitted polyester wipers for general cleaning purposes, spill pickup, and equipment cleaning. Continuous-filament, no-run construction offers resistance to chemicals and abrasion. Low extractables, with extremely low particle and fiber generation. For use in ISO Class 4 (FED-STD-209E Class 10/M2.5) environments. Manufactured and tested with strict adherence to quality assurance guidelines. Laundered and packaged in an ISO Class 4 (FED-STD-209E Class 10/M2.5) cleanroom. White. 9" x 9". 150/pk.