Bio-Tek High Bio Fuel Content FiltersBIO-TEK HIGH BIO-FUEL CONTENT FILTERS The Cim-Tek 300, 400 and 800BHA are designed to be used with EthanolMethanol and Biodiesel blends from 20% to 100%. These filters include a high performance 1 micron microglass media compatible with the aggressive solvent nature of bio-fuels. The filter housing is also epoxy coated for added protection and longer filter life.