Cleanroom Wiper Material : 100% Polyester Knit Wipes,Double Knits Size: 4"*4", 6"*6", 9"*9", 12"*12" Classs: 100, 1000, 1000 Cleanroom wiper Description: the lowest contamination levels at an economical price, Effiiently asbsorbs water and oil. whicj is laundered and packaged in a class 10 to 100 clean room laundry, Ideal for a variety of clean room applications and available with a heat sealed ...