1.for class 100-1000 2.for sentitive surface 3.strong absorbtion 4. ... from edgesLaundered by 18M ohms ultra pure water, packaged in class 100 clean roomLow particles and ionsDelicate texture, very soft, cleaning ... semiconductor, medical device and hard disk manufacturers 4. Ideal for class 100-1000 cleanroom. class 100 cleanroom wiper