Aquasky rot-4 replacement filters original organic cellulose for 4 stage under sink aquasky rot 4 reverse osmosis water systems,100% reduction rate of bacteria, pesticides, herbicides, and heavy metals from tap water, the main stage in this systems is the RO membrane and all of the other replacement filters are serving and providing protection to that membrane, if the pre-filters fail to work due to poor quality, that means your RO membrane will not give you 100% reduction rate. it include 3 filters and amembrane that must be replaced periodically, The different filters represent the different stages that the water goes through while being purified, Generally - Pre-Filters and post-Filters in aquasky RO systems can last around 8 To 12 months between changes.
 
Only the original organic RO membranes can last as long as 5 years 
 
 Stage 1-
  
Sediment filter is the first filter installed in Aquasky rot-4 reverse osmosis water filters systeme .
  
The main function of a sediment filter is to remove large and fine particles from a 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: ( DXI 9.2 X 1/4 - 7/8") x 2.6" 
  
Lifetime: please replace every year, depending on the water quality.

This filter is wrapped and sealed and meets NSF Standards and Regulations. Filter will fit any residential reverse osmosis unit that features standard 9.9” filter housing  ( look for compatible systems list )
 
stage 2-
  
Organic original Activated Carbon Block
  
Filter are made of fine coconut shell carbon 
  
Remove odors and tastes of many organic compounds and chlorine especially.
  
Because this 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: ( DXI 9.2 X 1/4/7/8")  x 2.6"
  
Lifetime: please replace every year, depending on the water quality.

This filter is wrapped and sealed and meets NSF standards and regulations. Filter will fit any residential reverse osmosis unit that features standard 9.9” filter housing ( look for compatible systems list )
 
Stage 3-
  
Original organic aquasky ROT-4 - 50 GPD NSF certified thin film TFC
  
Membrane is the main component of Aquasky rot-4 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 organic aquasky rot -4 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  Gallons Per Day (17.8 -18.6 Liters per Hour) Capacity
  
99% stabilized salt rejection (minimum rejection 96.5%)
  
NSF/ANSI Standard 58 listed
 
Operating Conditions 
Performance specifications based on 525 ppm tap water, 52psi (0.36 MPa) applied pressure, 74°F (25°C) feed water temperature, feed water pH 7-8 and 15% recovery. Element permeate flow may vary ± 22%.
  
Maximum operation pressure: 133 psi (0.86 MPa)
  
Maximum feed flow rate: 1.5 gpm
  
Maximum operating temperature: 119° F (47° C)
  
Maximum feed water turbidity: 1.2 NTU
  
Maximum feed water SDI (20min): 6
  
Chlorine tolerance: 0
  
Feed water pH range: 7-11
  
Minimum brine flow to permeate flow ratio: 4.5:1
 
Stage 4 -
  
Original organic Inline carbon filter for aquasky rot-4 is known as polishing filters, because they would usually be the last stage of any standard reverse osmosis circuit.
  
Being made of high quality coconut shell carbon they stabilize the water tasting qualities and further remove any traces of bad tastes and odors.
  
Dimensions: 10 " x 2.4"
  
Lifetime: please replace ones in 1- 2 years.
 
This filter is wrapped and sealed and meets NSF Standards and Regulations.