Suitable for most standard 4 stage Reverse Osmosis Water Filters including the Watts 4 stage Reverse Osmosis Water Filter system. These systems have 4 different types of filters. The second two post-filters come in this set. It is advised to change these approximately every2-3 years but it really depends on your water quality and TDS reading. This 2-3 yearsly 4 Stage Reverse Osmosis Replacement Filters Pack contains the 50 GPD Membrane and Carbon post-filter.
The first set of pre-filters should be changed every 6-12 months on average and is available separately here.
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|Model||2-3 yearly 4 or 5 Stage Reverse Osmosis Replacement Filters Pack|
Watts 50 gpd (gallons per day - 180 litres) TFC membrane - NSF Standard 42 Certified
Compatible with most Standard 4 and 5 Stage Reverse Osmosis Systems. This semi permeable membrane effectively reduces total dissolved solids and sodium, ingredients such as Arsenic, Lead, Percholate, Chromium, Copper, Radium and Protozoan Cysts, such as Giardia and Cryptosporidium.
1 off carbon in-line - NSF Standard 42 Certified.