Hydrophobic PTFE Membrane filter

In HPLC analysis, the column packing size is small and easily clogged by impurity particles, so samples and solvents need to be pre-filtered to remove particulate contaminants and protect the instrument. The ion chromatography method commonly used in environmental analysis also requires that inorganic contaminants not be introduced in the sample pre-treatment. Needle filters can be used in HPLC analysis and IC analysis to filter the sample solution as an important step in the sample pre-treatment process.