Buy online - Set 3 Compatible reverse osmosis replacement filters for Amtrol  RO-4 model, Organic cellulose 96-99% Reduction rate of bacteria, pesticides, herbicides, and heavy metals from tap water. It includes a total of 3 filters that must be replaced periodically. The filters represent the different stages the water goes through while being purified. Generally - Pre-Filters and post-Filters in this Amtrol reverse osmosis water system can last around 8 To 12 months between changes.
Only the organic RO membranes can last as long as 5 years.

Stage 1-
The sediment filter is the first filter installed in Amtrol reverse osmosis water filter system. The primary function of a sediment filter is to remove large and fine particles from drinking water, such as sand, dirt, silt, and rust particles. Removal of such particles allows for a better performance of all the following filters, such as carbon block or GAC filters.
 
Micron rating: 5 micron.
Lifetime: please replace every year, depending on the water quality.
 
This filter is wrapped and sealed and meets NSF Standards and Regulations.
The filter will fit any residential reverse osmosis unit that features standard 10” filter housing ( look for compatible systems list )

Stage 2-
Organic  Activated Carbon Block Filters are made of delicate coconut shell carbon, which removes odors and tastes of many organic compounds and chlorine.
Because these filters are made of packed carbon (forming a cylinder block), they offer a much finer filtration of suspended particles and dirt.
 
Micron rating: 5 Micron.
Lifetime: please replace every year, depending on the water quality.
 
This filter is wrapped and sealed and meets NSF standards and regulations.
The filter will fit any amtrol residential reverse osmosis unit that features standard 10” filter housing ( look for compatible systems list )

Stage 3-
Organic 50-75 GPD NSF-certified thin film TFC reverse osmosis membrane is the main component of the Amtrol reverse osmosis unit.
They are made with 100% Organic fine thin film flat sheet 96-99% Reduction rate of bacteria, pesticides, herbicides, and heavy metals from tap water.
Only the original organic membrane has The micron rating of a thin film less than 1/10000th of a Micron, which is 620,000 times finer than A human hair, 2,500 times smaller than bacteria, and 20 Times smaller than any virus.
 
Product Features: 50-75 Gallons Per Day (21.8 Liters per Hour) Capacity 99% stabilized salt rejection (minimum rejection 97%)
NSF/ANSI Standards: 58 listed operating conditions performance specifications based on 400 ppm tap water, 50psi (0.36 MPa) applied pressure, 78°F (25°C) feed water temperature, pH 7-8, and 20 % recovery.
Element permeate flow may vary ± 15%.
Maximum operation pressure: 120 psi (0.86 MPa)
Maximum feed flow rate: 2 gpm
Maximum operating temperature: 110° F (42° C)
Maximum feed water turbidity: 1 NTU
Maximum feed water SDI (15min): 5Chlorine tolerance: 0
Feed water pH range: 3-10 Minimum brine flow to permeate flow ratio: 4:1

This filter is wrapped and sealed and meets NSF Standards and Regulations.