PA-E Reverse osmosis RO-122 Replacement filters 99% reduction rate of bacteria, pesticides, herbicides, and heavy metals from tap water, the main stage in this system is the RO membrane, and all of the other replacement filters serve and provide protection to that membrane, if the pre-filters fail to work due to poor quality, that means your RO membrane will not give you 99% reduction rate. 
Buy online PA-E RO-122 Replacement filters cartridges for all 4-stage filters under counter sink parts for maintenance, service & Repair for PA-E RO122 under the counter sink 4-stage water filter system includes three pre-filters and a membrane 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 RO systems can last around 8 To 12 months between changes. pa-e ro-122 reverse osmosis 100% Organic - 50 Gallon per Day thin film TFC NSF Certified.
Only the original pa-e ro-122 RO membranes can last as long as five years.

Stage 1-
The sediment cartridge is the first filter installed in the PA-E RO-122 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.
Dimensions: 9.75" x 2.5"
Lifetime: Replace every year, depending on the water quality.

This PE-A RO-122 filter is wrapped and sealed and meets NSF Standards and Regulations. The filter will fit any residential reverse osmosis unit - PA-E RO-122 Reverse osmosis water filters.

stage 2-
Organic pa-e ro-122 Activated carbon block filters are made of fine coconut shell carbon.
 
This filter targets chlorine and eliminates unwanted tastes and smells, including those from organic compounds.
 
Though, because these filters are made of a packed carbon (forming a cylinder block), they offer a much finer filtration of suspended particles and dirt.
 
Micron rating: 5 Micron. Dimensions: 9.75" x 2.5"
Dimensions: 9.75" x 2.5"
Lifetime: Replace every year, depending on the water quality.

This PE-A RO-122 filter is wrapped and sealed and meets NSF Standards and Regulations. The filter will fit any residential reverse osmosis unit - PA-E RO-122 Reverse osmosis water filters.

Stage 3-
PA-E RO-122 Reverse osmosis under counter sink replacement filters has a - 50 Gallon per day NSF certified thin film TFC membrane is the main component of pa-e ro-122 Reverse osmosis unit.
Made with 100% Organic fine thin film flat sheet
99% reduction rate of bacteria, pesticides, herbicides, and heavy metals from tap water.
Only the original PA-E RO-122 reverse osmosis membrane has The micron rating of a thin film less than 1/10000th of a micron which is 620,000 Times thinner than A human hair, 2,500 Times smaller than bacteria, and 20 Times smaller than any virus.

Product Features:
50 Gallons per day (15.8 Liters per Hour) Capacity
99% Stabilized salt rejection (Minimum Rejection 97%) NSF/ANSI standard 58 listed
Operating Conditions Performance specifications based on 500 ppm tap water, 50psi (0.35 MPa) applied pressure, 77°F (25°C) feed water temperature, feed water pH 7-8, and 15% recovery. Element permeate flow may vary ± 15%.
Maximum operation pressure: 125 psi (0.86 MPa)
Maximum feed flow rate: 2 gpm
Maximum operating temperature: 113° F (45° C)
Maximum feed water turbidity: 1 NTU
Maximum feed water SDI (15min): 5
Chlorine tolerance: 0
Feed water pH range: 2-11
Minimum brine flow to permeate flow ratio: 4:1

This PE-A RO-122 RO membrane is wrapped, sealed, and meets NSF standards and regulations. The filter will fit residential reverse osmosis unit - PA-E RO-122 Reverse osmosis water filters.
 
Stage 4 -
PA-E RO-122 reverse osmosis under counter sink replacement Inline carbon Filter,
Inline filter replacement for The PA-E RO-122 reverse osmosis under the counter sink inline filters is also known as ( polishing filters ) because they would usually be the last stage of any standard reverse osmosis circuit. Made of high-quality coconut shell carbon, they stabilize the water-tasting qualities and remove any traces of nasty tastes and odors.
Dimensions: 10 " x 2"
Lifetime: replace ones in 1- 2 years.

This PE-A RO-122 filter is wrapped and sealed and meets NSF Standards and Regulations. The filter will fit residential reverse osmosis unit - PA-E RO-122 Reverse osmosis water filters.