Berkshire MicroPolx® 2750 is a sealed-edge, cleanroom laundered wiper recommended for ISO Class 4 and above. It is composed of a polyester and nylon knitted microfiber / microdenier fabric. This combination of properties provides MicroPolx® 2750 with the high level of cleanliness, abrasion resistance, and absorptive performance required for ISO Class 4 cleanroom and above environments as well as applications requiring critical control of contaminants.