KIMTECH* Brand offers truly innovative wiper solutions for scientific environments. From sterile pre-saturated cleanroom wipers to the wiper that’s the industry standard for labs and research, KIMTECH* Brand continues to provide the high-performance wiper solutions you need. KIMTECH PURE* W4 Presaturated Sterile Wipers are 100% polypropylene construction and feature 70% Isopropyl Alcohol and 30% deionized water to saturate the wipers. Recommended for ISO Class 4 or higher cleanroom environments.