SQ-EASY® PreFilters are a self-contained, positive closure sample preparation system that collects, filters, transfers and stores buffers, serum, plasma, urine, stool, blood, saliva and other liquid or viscous bodily fluids and tissue. All components are liquid tight and interlocking to prevent sample leakage. Standard components can be purchased directly from our distributors, Fisher Scientific and VWR, or customized for high volume applications. A wide variety of filtration materials are available to customize, including porous UHMWPE, HDPE and glass fiber. Reagents can be impregnated directly into the filter materials. For sampling, we provide the cap, a variety of tips and two tube sizes. This tip has 5µm particle retention, is hydrophilic and uses glass fiber and UHMWPE as the filtration medium.