Housing: polypropylene (non-pigmented), filter area 4.6 qcm, maximum pressure 75 psi, inlet: internal Luer lock, outlet: external Luer, autoclavable at 121°C /15 psi (applies to non-sterile filters only), pre-filter polypropylene PP 20 µm: 5 µm Whatman GD/XP ready-to-use syringe filters are ideal for samples being analysed for inorganic ions, as the amount of extractable ions is kept to a minimum. They are also an alternative for users who require a filter with extremely low protein binding properties. GD/XP Syringe Filters have a double pre-filter layer of 20 µm and 5 µm polypropylene filters. A choice of membranes can be positioned under the pre-filter layer for the final stages of filtration. The GD/X syringe filters allow you to filter even the most difficult samples with less manual pressure. Exceptional loading capacity and fast flow rates prevent back pressure and membrane clogging Graded microfibre pre-filters from 1 μm to 0.7 μm HigMeer tonenMinder tonen