... Cleanroom Polyester Swab is an excellent dissipative swab for cleaning very small grooved, slotted,recessed areas,or broad surfaces ... not contribute to particulate or organic contamination. Designed for general purpose cleaning, Cleanmo Anti-static Cleanroom swabs ... The electronics, Semiconductor, Hard disk drive, Optics-electronic, TFT-LCD, IC, SMT, PCB, medical field,pharmaceutical, food processing ...