Sample Filtration

We have designed and manufactured a dried blood spot (DBS) system that provides many efficiency gains over simple hand tools. We also have the hard to find end-to-end micro pipettes prefilled with anticoagulant.

We have a wide range of filter membranes: PP, PES, PVDF, glass fiber, nylon, PTFE and CA. Here is a schematic to assist in selecting the applicable membrane for your sample.

We have an easy to read SPE selection guide that you can reference below or within our main catalog (both print and PDF versions available).

Our proprietary 1 mL protein crash plates (PN 60513) are made under tight tolerances in our NJ facility. We designed a unique membrane combining the hydrophilic, hydrophobic and a frit properties in one.

The optimal centrifuge force is dependent on your sample. Generally we recommend you start with the most dilute form of the sample. For the 96 well filter plate format please use a low rcf ( <1000 xg ) in a first trial for 10 minutes. If the filtration is incomplete, increase the centrifugation time by estimation to drive to completion and /or increase the rcf incrementally to a satisfactory filtration rate. Do not spin at more than 2000 xg. Please use a good fitting collection plate below the filter plate. For micro-centrifuge format you can spin up to a max of 15k xg.