What is the working principle of ptfe bubble point film?

Nanofiltration is a liquid-liquid separation method that allows salt and small molecular substances to pass through the nanofiltration membrane under the driving force of pressure difference, while retaining large molecular substances. It is also called low-pressure reverse osmosis.

PTFE bubble point membrane has a molecular weight cutoff range of 200-1000MWCO, which is between ultrafiltration and reverse osmosis. It is mainly used for the concentration and purification of macromolecular substances in solutions.

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