Product Development The BVV Mist Filter is our solution to capturing the oil mist exhausting out of vacuum pumps. This filter is filled with a replaceable media and will save you $ over alternative solutions like the Koby filter. The filter media is a granular food grade adsorbent and is designed to adsorb oil specifically. The granular media doesn't restrict flow on your pump, and when it becomes saturated with oil it continues to work. We recommend you change out the media when the filter is 50% soaked with oil. During certain vacuum pressures light vapor mist may momentarily exit the filter. The filters within the housing, do not have an indefinite life. Should they become dirty and clogged over the years, it can be cleaned with degreaser like CitraKlean CK-1QT then left to dry before re-loading. Media Capacity: 185 grams. Media Refill: ULTRA-1000G Media Housing Replacement: CLEAR-210 | BVV Vacuum Pump Vapor Mist Filter