Airguard is now manufacturing dust cartridges made with 100% spun bond polyester media for use with pulse jet dust collectors in the ceramic industry. Specific applications include powder mixing, grinding, calcining, pulverizing, crushing and bagging operations. The non-woven spun bond media has high initial efficiency and excellent dust cake release characteristics. The media is long wearing and abrasion resistant. Cartridges are washable and resist most chemicals, including many acids, alkalis, oxidizing agents and solvents.