Kimberly-Clark Professional™ Kimtech™ Pure™ W4 Wiper is a 100% polypropylene wipe that comes pre-saturated with 70% isopropyl alcohol (semiconductor grade) and 30% deionized water, in a resealable pouch. They are specially designed for ISO Class 4 and higher cleanrooms and are low lint (good for environments where “lint-free” is important). These disposable wipers are ideal for use in pharmaceutical, high-tech, biotechnology and medical device industries that require alcohol wiping for critical tasks. The product has dimensions of 9"x11" and comes in a case of 10 packs with 40 wipes per pack.