CERNATA™ Cleanroom Wipes are specially designed polyester wipes for Digital printers. ISO 4 (Class 10 cleanroom) 4 edge Laser cut and sealed. Made especially for cleaning encoder assembles and print heads. These very soft, delicate lint free wipes will not scratch, leaving no fibres or contamination. Prefered alternative to using `lolly pop` Swabs for cleaning print heads. 300 Wipes per pack 4 x 4 inch (10x10cms).