PTFE membrane syringe filters, hydrophobic, chemically resistant for clarification of organic solutions. Recommended: Aggressive solvents, Strong Acids, Bases, Alcohols, Aromatics. Not Recommended: Aqueous samples. 30mm 0.45um PTFE with Luer lock (Colour Coded: Orange) 100/pk. NOTE: 30mm diameter syringe filters are not supplied in resealable plastic boxes. SPECIAL PRICE ONLY AVAILABLE WHILST STOCKS LAST!!