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PureT (E3RO550-RETRO) "EZ SLIM" 5 Stage Reverse Osmosis System 50 GPD RETRO FIT KIT

Product Code E3RO550-RETRO

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5 Stage Reverse Osmosis System

Retro Fit Kits are full systems without the tank; installation kit; and faucet.

Change a filter in 3 SECONDS!


  • requires no tools for maintenance
  • is lighter for easy handling
  • it's green! with its recyclable filter cartridge
  • worry-free solution! with color coded filter cartridges
  • innovative EZ Twist-On connection design


  • Dimensions : 18"height x 13.5"width x 4.75"depth
  • Unit Weight: 6.5 (3.0 kgs)

Recommended Potable Water Supply Condition:

  • Max. Total Dissolved Solids (TDS) : <2,000 ppm
  • Water Pressure Range : 40-100psi (2.8 bar) required
  • Min. Inlet Water Pressure : 40 psi (2.8 bar) required
  • Water Temperature Range : 40-85°F (4.5-30°C)
  • Water pH Range : 4-11


Home, office, fitness center, juice bar, coffee shop water filtration system

The EZ Slim water filtration filter is ideal for all of these locations. The PureT reverse osmosis system separates several processes of water filtering to provide clean, pleasant drinking water. Water is first pre-filtered using a sediment particle filter. Prefiltration cleans the water by removing tiny impurities. There is also rust-causing iron oxide (rust), silt, sand grains, and insect parts. In addition to keeping your family safe from ingesting sediment, this filtering step also keeps your filtration system from being clogged.


1st Stage : Sediment Depth Filter
Part Number: E3IL-12WS5GR (5 Micron)
(Polypropylene Melt-blown Depth Filter)


  1. Dimension: 2.5" Dia. x 12"
  2. Max. Flow : 1.0 GPM
  3. Max. Pressure : 125 psi
  4. Max. Temperature : 125°F (52°C)
  5. Service Life : 5,000 gallons


  • 100% Polypropylene NSF Certified Material
  • Particle Removal (dirt, sediment, rust particles, and other particulates)
  • Improving Water Clarity, Taste, and Odor
  • Greater Dirt-holding Capacity with Multi-layers Gradient Design
  • High Flow Rate, Low Pressure Drop
2nd Stage : Granulated Activated Carbon Filter
Part Number : E3IL-12WCLBL
(Granulated Coconut Shell Carbon 12x40 mesh size)


  • Dimensions: 2.5" Dia. x 12"
  • Max. Flow: 1.0 GPM
  • Max. Pressure: 125 psi
  • Max. Temperature: 125°F (52°C)
  • Service Life: 5,000 Gallons


  • 100% Coconut Base Carbon NSF Certified Material
  • Chlorine, Odor and Bad Taste Removal
  • Tremendous Surface Area Resulting From Its Porous Structure
  • Maximum Adsorption Process
  • Great Removing Volatile Organic Carbon Compounds (insecticides and/or pesticides)
  • High Flow Rate, Low Pressure Drop
3rd Stage: Coconut Shell Carbon Block Filter
Part Number: E3IL-12WCBNVY (5 Micron)


  • Dimensions: 2.5" Dia. x 12"
  • Max. Flow: 1.0 GPM
  • Max. Pressure: 125 psi
  • Max. Temperature: 125°F (52°C)
  • Service Life: 2,500 Gallons


  • 100% Coconut Base Carbon NSF Certified Material
  • Chlorine, Odor and Bad Taste Removal
  • High Adsorptive Capacity and Efficiency
  • Great Removing Volatile Organic Carbon Compounds (insecticides and/or pesticies)
  • No Channeling
  • No Release of Carbon Fines
  • High Flow Rate, Low Pressure Drop
4th Stage : RO Membrane Filter
Part Number : PT-1812-50 or TW30-1812-50 (50 gallons per day)


  • Dimension: 1.75" Dia x 11.74"
  • Up to a 98% Rejection Rate*
  • Polyamide Thin-Film Composite
  • Max. Pressure: 150 psig
  • Max. Temperature: 113° (45°C)
  • Max. Feed Flow Rate: 2 GPM
  • Max. Feed Silt Density Index (SDI): 5
  • pH Range: 2-11
  • Service Life: 1-2 years


  • Reduce TDS value in water
  • Reduce 98% of dissolved minerals, salts and other chemical contaminates in potable water supply*
  • Remove most harmful chemicals
  • Reduce E.coli in potable water
  • Remove most heavy metals
  • Reduce TDS, Barium, Cadmium, Hexavalent & Trivalent Chromium, Copper, Lead, Radium 226/228, Selenium, Fluoride, Nitrite, and Nitrate (see owner manual for more details)
5th Stage : Inline Polish Filter
Part Number : IL-10W-C-EZ
(Granular Coconut Shell Carbon: 12x40 mesh size)


  • Dimension: 2" Dia. x 10"
  • Max. Flow: 0.5 GPM (1.9 LPM)
  • Max. Pressure: 100 psi
  • Max. Temperature: 100°F (38°C)
  • Min. Temperature: 35°F (2°C)
  • Service Life: 2,500 gallons


  • Chlorine Taste and Odor Reduction
  • NSF Certified and Particulate Class V
  • Simple Basic Design with Best Efficiency
  • High-Grade NSF Certified Coconut Shell Carbon
  • Include pre- and post-filter pad
  • No channeling or clogging
  • Built-in Quick Connect Fittings


The Best 5 stage Reverse Osmosis System 

The PureT EZ SLIM system utilizes a comprehensive 5-stage filtration process to remove impurities and contaminants from your water supply. From sediment and chlorine to heavy metals and harmful chemicals, each stage of filtration works together to ensure that you are left with pure, great-tasting water. Say goodbye to the unpleasant taste and odor commonly associated with tap water.

With its sleek and compact design, the PureT EZ SLIM system is perfect for homes with limited space. The system can be conveniently installed under your sink, preserving valuable counter space in your kitchen. Its slim profile ensures a seamless fit and integration into your existing setup, without compromising on performance or functionality.

We understand that convenience is a top priority for our customers. That's why the PureT EZ SLIM system is designed for easy installation and maintenance. The system comes with a user-friendly installation guide that will walk you through the process step-by-step. Additionally, the system's filters are long-lasting and require replacement only once every 6-12 months, depending on water quality and usage. Enjoy the benefits of purified water without the hassle.

Equipped with advanced reverse osmosis technology, the PureT EZ SLIM system delivers impressive efficiency and performance. The system has a capacity of 50 gallons per day (GPD), ensuring a steady supply of purified water for you and your family's daily needs. Whether you're using the water for drinking, cooking, or other household tasks, you can trust the PureT EZ SLIM system to provide consistent and reliable results.

Investing in the PureT EZ SLIM system not only enhances the quality of your water but also offers long-term cost savings. By using this system, you can eliminate the need for bottled water, which can be expensive and harmful to the environment. Enjoy the convenience of having clean, purified water directly from your tap, all while saving money in the process.

The PureT (E3RO550-EZ) "EZ SLIM" 5 Stage Reverse Osmosis System is a reliable and efficient solution for purifying your water. With its advanced 5-stage filtration, space-saving design, easy installation and maintenance, high efficiency, cost-effectiveness, and trusted quality, the PureT EZ SLIM system stands out as a top choice for your water purification needs.