SPI-Sky Polyester/Cellulose Wipers, 6.75x9 in (171x229 mm), Pack of 100

This multi-purpose blue wiper is very strong and absorbent. A blend of cellulose and polyester, SPI-Sky is a non-woven wiper that is lint-free, additive free and resists hydrocarbons, detergents and alcohol. Great for tricky spills: wiper turns dark blue to alert the user that the spilled material is being picked up.