W4 Critical Task Wipers, Flat Double Bag, 12 x 12, Unscented, White, 100/Bag, 5 Bags/CartonWipers are designed for ISO Class 4 or higher cleanroom environments and are acid , base and solvent resistant. Wipes are anti static (anti stat). Low lint for environments where lint free" standards are important. These disposable wipers are certified for ISO Class 4 and higher cleanrooms. The white wipers are double bagged for an extra layer of protection in sensitive environments. Ideal for use in high tech, biotechnology, pharmaceutical and