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PureT E31L-12W-CTO-5 Carbon Block Filter for EZ Slim RO System

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E31L-12W-CTO-5 Coconut Shell 5 Micron Carbon Block Filter for chlorine taste and odor, VOC removal.


WECO is proud to present the PureT branded EZ Slim 5 stage reverse osmosis filtration system. EZ Slim is the ideal water purification filter for home, office, health clubs, juice bars, coffee shops or anywhere safe, fresh-tasting water is needed. The PureT reverse osmosis system uses separate individual stages of water filtration to create pure, refreshing drinking water. The process starts by pre-filtering the water through a sediment particulate filter. Prefiltration removes tiny particles that can get into the water supply. These include iron oxide (rust), silt, sand grains and insect parts. This filtering stage protects your family from drinking sediment and prevents the filtration system from clogging. At the 2nd stage, a granilar activated carbon filter cartridge filters chlorine taste and odor. Next, water flows through an activated carbon block cartridge. This compressed activated carbon block filter removes taste and odor-causing chemicals like chlorine, chloramine and rotten-egg (hydrogen sulfide) and musty odors. The chlorine disinfection process is known to create cancer-causing byproducts in the water. These carcinogens, called THMs, are removed by the activated carbon block filter. The carbon cartridge also removes organic contaminants like herbicides, insecticides and industrial chemicals that seep into groundwater. But that’s not all. The next filtration stage involves the reverse osmosis (RO) process. Tap water is “squeezed” through a special Thin Film Composite (TFC) semi-permeable membrane. Heavy metals, like lead, cadmium and mercury, are removed while purified water passes through. The RO process also removes salts, nitrate, fluoride, radon and benzene. The reverse osmosis membrane is NSF-certified and features outstanding efficiency. Other reverse osmosis filters can waste up to 10 gallons of water for every gallon of pure water made. Just like our own WECO RO systems, the PureT EZ Slim high-performance RO membrane produces only four gallon of waste water for each gallon of purified water. This saves you money, reduces waste water, conserves resources and helps the environment. For the final stage of purification the water flows through granular activated carbon (GAC) in-line post filter. This acts as a polishing filter, removing any traces of tastes, odors or gasses, for crystal clear, sparkling drinking water.

E31L-12W-S5 Sediment 5 Micron Depth Filter
  • E31L-12W-S5 Sediment 5 Micron Depth Filter for particlulate removal (dirt, sediment, rust particles and other particulates).
  • E31L 12W-C Granular Coconut Shell Carbon Filter with 12x40 mesh size for chlorine taste and odor removal.
  • E31L-12W-CTO-5 Coconut Shell 5 Micron Carbon Block Filter for chlorine taste and odor, VOC removal.
  • PT-1812-50 PureT Reverse Osmosis Membrane for reduction of dissolved solids, fluoride, barium, cadmium, lead, chromium, nitrate and other chemical contaminants in potable water.
  • IL-10W-C-EZ Inline Granulated Coconut Shell Carbon Polishing Filter for taste improvement.


Contaminants Removed

  • Sediment Filter - Up to 99% sediment and particulates (5 microns and higher)
  • Carbon Filter - Up to 99% of chlorine, radon and volatile organic compounds
  • Thin Film Composite Membrane
Sodium 90-95%
Aluminum 93-98%
Magnesium 93-98%
Potassium 90-95%
Iron 2 93-98%
Manganese 2 93-98%
Calcium 93-98%
Copper 94-99%
Silver 93-98%
Zinc 93-98%
Strontium 93-98%
Cadmium 93-98%
Nickel 93-98%
Mercury 93-98%
Radioactivity 93-98%
Chromium-6 94-99%
Chromium-3 94-99%
Lead 94-99%
Chloride 90-95%
Bicarbonate 90-95%
Nitrate3 85-90%
Fluoride 90-97%
Phosphate 93-98%
Chromate 90-95%
Cyanide 90-95%
Sulfate 93-98%
Boron 55-60%
Arsenic + 3 70-80%
Arsenic + 5 94-99%
Selenium 93-98%
Barium 93-98%
Sediment > 99%
Protozoa > 99%
Ameobic- > 99%
Cysts > 99%
Turbidity > 99%
Asbestos > 99%
Bacteria > 99%
Giardia > 99%

* Source: water quality association,

** 60 psi net pressure and 77° F water temperature

*** Performance depends on condition of feed water

Specifications & Operating Limits

Max. Filtered Water Flow (gpm) 0.75
Max. Hardness 10 Grains @ 6.9 pH
Max. TDS (ppm) 2000
Automatic Shut-Off Yes
Filter Life

6 Months or 750 gallons for pre-filters

24 Months for membrane

Feed Water pH Limits 4-10
Feed Water Pressure (psi) 40 Min - 125 Max.
Feed Water Temperature 40-100 °F
Fittings 1/4" - Push to Connect
Plumbing Connections 1/2" Water Supply Adapter
Water Inlet Valve 1/4" Ball Valve
Filtered Water Output 50 gal/day
Pre/Post Filter Life 750/2,500Gallons
Color Appearance White
Pre-Filter Design EZ Twist Lock
Installation 1/2" Water Supply Adapter Included
Unit Color White
System Mounting Orientation Floor Standing or Wall Mount
Weights & Dimensions
Overall Depth 4.8 in
Overall Height 18.0 in
Overall Width 13.5 in
Approximate Shipping Weight 19.5 lb
Net Weight 19.5 lb
Icemaker Connection Kit IM25EZ (Available at Additional Cost)
Installation Kit Included
Replacement Pre-Filters EZ-SLIM-SET3
Replacement Membrane PT-1812-50
Parts Warranty Limited 1-year
App Filter - Product Type Filtration Reverse Osmosis
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