Kimtech Pure W4 Critical Task Dry Wipers are specially designed for ISO Class 4 and higher cleanrooms, since they are anti-stat, double bagged for extra protection and low lint (good for environments where “lint-free" is important). Their unique, textured surface is absorbent, so you can use them for a variety of tasks. These disposable wipers are ideal for use in pharmaceutical, high-tech, biotechnology and medical-device industries that require critical tasks.