Why is filtering of water samples very slow when using PTFE membrane filters – FAQ

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ARTICLES, APPNOTES, FAQ (9012)
- AppNotes Library (1878)
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April 12, 2013
Bill Ciccone

ARTICLES, APPNOTES, FAQ / Filter Degasser FAQ / Filtration FAQ / Frequently Asked Questions?? / HPLC Tips and Suggestions / Mobile Phase Suggestions / Syringe Filters and Filtration Information / Syringe Filters FAQ / Trouble Shooting Suggestions

PTFE is naturally very hydrophobic and therefore not well-suited to filtering aqueous based samples through a membrane. Due to the polarity differences, it will be difficult to filter.

Many other membrane types including nylon that is more hydrophilic should be used for water-based samples instead.

Click HERE for filter membrane ordering information and pictures.

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