CERTEK is a superstrong, multi-purpose workshop wipe that is lint free. It can be used for various general and specialist wiping tasks and capable of cleaning virtually any surface - making them one of the most versatile wiping cloths on the market today. Safe to use with MEK1 , isopropyl alcohol, solvents and other cleaning agents. Suitable for Pharmaceutical/precision engineering/printing/janatorial/aluminium surfaces/glass/OEM manufacturing: Unit of sale: Dispenser box containing 200 Wipes 30x38cm. AEROSPACE & PHARMACEUTICAL APPROVED.