Abdos Low Retention Filter Tips are made of hydrophobic Polypropylene (PP) conforming to US FDA 21CFR. The filters are 100% pure porous (PE) which allows recovery of wetted samples while the inert, hydrophobic filter does not trap or block liquids. Filtering without contamination prevents both liquids and aerosols from passing through the filter. Polypropylene racks are very robust, sturdy with consistent and thick wall thickness can be used for repeat autoclaving. Racks are hinged with transparent lid and base providing excellent view inside the box. • Non-Cytotoxic: ISO 10993-5 MRM, Minimal Essential Media Elution, GLP Compliant • 99.9% Bacterial Aerosol Filtration Efficiency (BFE) ASTM F21012 • Non-Hemolytic: Modified ASTM F 756-08 Hemolysis Direct Contact GLP with Human Blood • DNase, RNase, Human DNA, ATP & Pyrogen Free