Berkshire Twillx® 1622 is an environmentally friendly wipe designed for cleanrooms rated ISO Class 6 (Class 1000) and above. Twillx® 1622 is 100% biodegradable. It is made from 100% cotton woven in a twill pattern and bias cut to minimize contamination. Twillx® 1622 is engineered for tough cleaning applications requiring absorbency, strength and heat resistance. Twillx® 1622 is a sturdy wipe that permits cleaning and wiping of heated surfaces as well as polishing and burnishing rigid disk surfaces. This wipe may be used in Wafer FAB, laboratories, biotech research facilities, aerospace, electronics, photo processing, print, computer and disk drive assembly, semiconductor, biomedical, pharmaceutical, and hard disk manufacturing.