PTFE 0.45 Um 0.22 Um Micron Syringe Filter 13 mm 25 mm for Laboratory Filtration US $ 0.041-0.068 / Piece 100 Pieces (MOQ) More Vacuum Blood Collection Tubes, Test Tube, Pipette Tip, Urine Container, Microscope Slide, Filter Tip, Swab, Centrifuge Tube, Cryovial Tube, Blood Lancet Audited Supplier Chongqing New World Trading Co., Ltd.