We recommend using Nylon membranes as the standard material for filtering eluents due to its chemical compatibility. As Nylon is hydrophilic in nature, these membranes are appropriate for filtering aqueous solutions and for most of the organic solvents used in HPLC. The Nylon membrane has a uniform pore size , consistent flows and a very low level of extractables.
It can be exposed to up to 180°C without damage and has a pH range from 3 to 12.

Mixed Ester membranes are composed of a mixture of inert cellulose nitrate and cellulose acetate polymers. The uniform microporous structure of these filters provides the fastest flow rates and highest throughputs available in a membrane filter. It’s hydrophilic nature makes them ideal for filtering aqueous solutions, including buffers. These filters are autoclavable at 121°C (250°F) for 20 minutes. The pH range is from 4 to 10.