Kingda jar mill complete jar selection package covers the full range of milling jars for laboratory jar mills: high-purity alumina ceramic jars, 304 stainless steel jars and wear-resistant nylon jars from 500ml to 15L. Key Features Three jar materials to match different grinding contamination requirements Capacity range 500ml to 15L fits all Kingda jar mill models Alumina jars with 99% Al2O3 content and smooth inner surface Stainless steel jars with food-grade and corrosion