NSF (NATIONAL SANITARY FOUNDATION) STANDARDS INFO: Notes such as “meets / conforms to NSF standard 42, 53, 61” do not mean or guarantee that the cartridge actually is NSF approved. This may indicate that the manufacturer has manufactured the cartridge in accordance to this standard. NSF STANDARD 42 - Drinking water treatment units - aesthetic effects. Standard 42 covers point-of-use and point-of entry (POU / POE) systems designed to reduce specific aesthetic, or non-health effects contaminants (chlorine, TDS, particulates) that may be found in drinking water that is considered to be microbiologically safe; NSF 53 - Drinking water treatment units - health effects. It covers point-of-use and point-of-entry (POU/ POE) systems designed to reduce specific health related contaminants (cryptosporidium and giardia cysts, volatile organic chemicals, lead, etc) that may be present in public or private drinking water that is considered to be microbiologically safe; NSF 61 - covers specific materials or products that come into contact with drinking water, drinking water chemicals, or both. FLOW RATES: Actual maximum flow rates vs. pressure drop will be determined based on cartridge selections and fluid viscosity. CARBON FINES: An activated carbon cartridge (Taste/Odour) may contain a small amount of carbon fines (very fine black powder) and a new cartridge, after installation, should be flushed with sufficient water to remove the fines before using the water. CELLULOSE: Certain types of harmless bacteria will attack cellulose material. Cartridges containing cellulose may seem to disintegrate, produce a “sewer” or “rotten-egg” odour, or form a black precipitate due to the bacteria. If you notice any of the above problems while using the cellulose media cartridges, switch to a synthetic media cartridge or consult the manufacturer. CHANGE OUT: Replacement cartridges have a limited service life. Changes in taste, colour and flow of the water being filtered are signals that replacement of the cartridge is or soon may be necessary.
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