The Magid Moldex SparkPlugs Antimicrobial EcoStation Copper Starter Kit, No. M6933, features a CuVerro copper dispensing handle that continuously kills bacteria left behind by dirty hands, killing more than 99.9 percent of bacteria even after repeated contamination, and within two hours of exposure. The unit comes equipped with 500 pairs of Moldex SparkPlugs earplugs. Sealed refills install quickly and easily. One pair of earplugs is dispensed at a time, preventing waste. Tested to ANSI S3.19-1974.