Puradisc™ polypropylene syringe filters have high and uniform tolerance to heat and mechanical stress. The slightly hydrophobic membrane is resistant to a wide variety of organic solvents. Suitable for HPLC sample filtration (water-based), purification of reagents and buffers, and filtration of aggressive water solutions, such as acids and alkalis.

These special Depth filters (DpPP) consist of a woven polypropylene which catch particles inside the filter instead of on the surface. This media is a good choice where increased loading capacity is required, such as for general clarification of samples, and can be seen as a combined alternative to a glass microfiber prefilter with a PP filter behind.