Thick lint free wipe presaturated with 91 percent pure Isopropyl Alcohol and 9 percent deionized water. Cleans dirt, oxides, oils and other contaminants. Ideal for cleaning sensitive contact surfaces, computers, electronic equipment, magnetic tape heads, office equipment, instruments, fiber optic connectors and ferrules. Non abrasives. Plastic safe. Moderate evaporation. Box of 50 individually packaged wipes measuring 4" by 3" each. RoHS Compliant.