The information from this video will allow you to learn how to choose high-quality reverse osmosis membranes.
Today's reverse osmosis membranes have one very bad property - they do a good job of filtering inorganic impurities (salts, acids, alkalis) and large organics. At the same time, low molecular weight organic chemicals are filtered very poorly.
Although commercial often promises you that the membrane filters water by 98-99%, in reality these values are achieved only on simple substances like sodium chloride.
Substances like urea, formaldehyde are filtered by only 20-35%. Manufacturers hide this information and not mention it in their commercial booklets.
For each membrane, they have a selectivity passport, which indicates the real degree of filtration of all popular pollutants. Before buying a membrane, always ask for this data sheet. Make sure that the filtration readings of low molecular weight organic chemicals are at the highest possible level. Also make sure that the membrane is original - today the market is flooded with fakes. Buy a membrane with a qr-code, which is checked through the official website of the manufacturer.
www.csmfilter.com/csm/03resul...
Негізгі бет Ғылым және технология ro membrane rejection passport
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