Ideally suited for ISO Class 4 or higher clean rooms. One-step application of alcohol to critical surfaces. Use for surface wiping in clean room environments. 100% polypropylene base sheet. 70% isopropyl alcohol/30% deionized water.- W4 Pre-Saturated Wipes, 11" x 9", Resealable Pouch, Sterile, 40/pk, 10 pk/cs (72 cs/plt) (HAZMAT Fees Apply, cannot ship via Air or to AK, GU, HI, MP, PR, VI) 14-21 Days