b'Filter Media / Specialty MaterialsDraylon Homopolymer Acrylic FeltRecommended continuous operation temperature .250FMaximum (short time) operation temperature 275FSupports combustion .YesBiological resistance (bacteria, mildew) .Good+Resistance to alkalies FairResistance to mineral acids Good+Resistance to organic acids .ExcellentResistance to oxidizing agents GoodResistance to organic solvents .Good+Available weights 15 oz. - 18 oz.Anti-Static Polyester Feltscontaining stainless steel scrimRecommended continuous operation temperature .275FMaximum (short time) operation temperature 300FSupports combustion .YesBiological resistance (bacteria, mildew) . No Effect resistance to alkalies FairResistance to mineral acids .Fair+Resistance to organic acids . FairResistance to oxidizing agents GoodResistance to organic solvents . GoodAvailable weights . 16 oz.Tetratex Expanded PTFE Membraneon Woven FiberglassRecommended continuous operation temperature .500FMaximum (short time) operation temperature 525FSupports combustion . NoBiological resistance (bacteria, mildew) Excellent Effect resistance to alkalies FairResistance to mineral acids Good+Resistance to organic acids Good+Resistance to oxidizing agents .ExcellentResistance to organic solvents .Good+Available weights . 9 oz. - 16 oz. - 22 oz. Magnified image of membranewww.standardfilter.com1.800.634.58371.760.929.8559 13'