Specifications Bleaching Earth for Waste Oil Refining 1)Free acid:<=0.20% 2)Moisture: ... <=10.0% 3)High filtration speed Activated Clay for Waste ... odorless,tasteless,non-toxic3)Usage:♦Used for decoloring,refining and purifying minerals,such as lubricating oil, ... etc.♦Used for recycling and regeneration of industrial waste oil,such as machine oil,lubricating oil, ...