The Berkshire CH809.10 Choice 800 Series Polyester Wipes are designed for use in cleanroom ISO Class 4 and higher environments and are chemically compatible with IPA, acetone, and other solvents. These low priced wipes offer the performance consistency of higher priced wipes and backed by Berkshires guarantee (money back should the wipe fail to perform according to specifications). The Berkshire CH809.10 Choice 800 Series Polyester Wipes are laundered and packaged in ISO Class 4 (Class 10) cleanroom and have a knife-cut edge for reduced scratching potential on sensitive surfaces. These economical wipes provide excellent absorbency and perfect for a wide range of applications. They comply with RoHS 2002/05 REACH requirements.