... environment, cleaning wafer,precise instrument,semiconductor/SMT/PCB,optical products.. Clean room Wiper Features 1. Superb absorbency, excellent cleaning ... Ohms ultra-pure water, packaged in class 10 clean room 6. Very delicate texture, super soft, cleaning surfaces ... , disk driver, composite materials 3) Ideal for maintenance optical products and precision instruments and equipments 4) Widely used ...