... 4", 6"*6", 9"*9", 12"*12" Classs: 100, 1000, 1000 Cleanroom wiper Description: the lowest contamination levels at an economical price ... whicj is laundered and packaged in a class 10 to 100 clean room laundry, Ideal for a variety of clean ... : 100, 1000, 10000 Application: Cleanroom wipers are widely used in PCB, LCD, Semi-conductor ,Chemical, instrument, Laboratory, Food indusries etc., Cleanroom Wiper