Large selection of replacement water filters, reverse osmosis membranes, testing kits and water filter system repair parts. From one water filter or membrane to case quantity discounts.

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Crane Environmental RO-450 Water Filters

Crane Environmental ® RO-450 compatible 4 stage replacement water filters & reverse osmosis membranes. Uses all John Guest quick connect fittings with NPT thread connections.

  1. 4 STAGE- Standard Filter Change Kit -2000
    4 Stage Standard Filter Change Kit - Grp

    4 Stage Reverse Osmosis Filter Change Kit. Standard size replacement RO water filter cartridges for a standard 4 stage RO drinking water system.

    • (2) 5 Micron Sediment Pre Filters   (change at least every 6 months)

    • (1) 10 Micron Carbon Block Pre Filter   (change at least every 12 months)

    • (1) GAC Inline Post Filter   (change at least every 12 months)

    Learn More

    Starting at $5.99

  2. Pro Products Sani System Sanitizer
    Pro Products Sani System Sanitizer
    Pro Products Sani System Sanitizer. 0.25 or 0.5 fl. oz. concentrate. Sani-System ® Pro Products is proud to introduce Sani-System, the first and only EPA product approved for sanitizing water softeners, RO units and Water Coolers. Sani System is proven to kill 99.9% of E. coli, E. coli O157:H7, Staphylococcus aureus, Listeria monocytogenes and other harmful bacteria. It does not use chlorine, other oxidizers or acids that can harm water softener equipment parts. Use is simple; each dose comes in a pre-measured pouch. Just cut, pour and regenerate softener. No measuring, No mess! Sanitizing Equipment! Applications Interior Surfaces of Water Softeners, Reverse Osmosis (RO) Units, Ice Machines, Water Coolers, Water Holding Tanks and Pressure Tanks. Sani-System is now NSF certified! This is the best sanitizing solution available anywhere! Stock up and save. Learn More
    $7.99 Special Price $4.99 As low as $2.49
  3. Air Pressure Gauge for Reverse Osmosis Water Accumulator Tanks -1000
    Air pressure gauge for reverse osmosis water accumulator tanks
    Air pressure gauge for reverse osmosis water accumulator tanks - Specially calibrated for reverse osmosis system tanks. Scale from 1 to 20 PSI. Large scale reading over small PSI range allows optimum accuracy. Just like car tires lose air pressure, so does the bladder of your reverse osmosis water accumulator tank. Improper tank air pressure will cause your system to operate improperly. This is a must for all reverse osmosis system owners. Learn More
    $24.99 Special Price $17.99 As low as $12.99
  4. HM Digital AP-1 AquaPro Water Quality Total Dissolved Solids Tester
    HM Digital AP-1 AquaPro Water Quality Total Dissolved Solids Tester
    HM Digital AP-1 AquaPro Water Quality Total Dissolved Solids Tester, 0-5000 ppm TDS Range, 1 ppm Resolution, +/- 2% Readout. HM Digital introduces its new AquaPro series, a line of handheld TDS/EC meters with a sleek design that's perfect for today's modern kitchen. The AquaPro digital water testers are the next generation for today's tech-savvy and health-conscience consumer. Learn More
    $42.95 Special Price $29.99 As low as $20.00
  5. TDS Water Meter Dual Mode Readings - DM2 HM Digital Professional Grade
    TDS Water Meter Dual Mode Readings - DM2 HM Digital Professional Grade - Easily Installs Inline - Very Simple To Use
    TDS Meter Dual Mode Readings - Professional Grade - Easily Installs Inline - Very Simple To Use. Measure the tap water coming in vs. the purified water going out of your system at any time. Use the meter to determine when the filters need to be changed. Highly efficient and accurate due to its advanced microprocessor technology. Displays TDS levels of the Feed Water and Product Water with in & out electrode probes. Auto-Off function conserves battery power. The unit shuts off automatically after 20 seconds. Dual Range - Measures from 0-999 ppm, with a resolution of 1 ppm. Learn More
    $69.99 Special Price $49.99 As low as $29.99

Easy TDS Membrane Performence Calculator
See If It is Time To Replace Your Membrane

Simply enter your Feed Water TDS and RO Water TDS into the boxes above and click "Submit". The percentage of TDS Rejection will be displayed. We normally recommend membrane replacement once you drop below 75%. This may vary in areas with high TDS in the feed water.

See our selection of TDS meters under Water Tests

 


 

Be sure to check our Parts Department for important parts such as TDS Testers For Reverse Osmosis Membranes, Replacement Tanks, O-rings , Filter Housing Wrenches, Faucets, Pumps, Fittings, UV Systems and more parts for your reverse osmosis pure water filtration system.   View maintenance and servicing tips online at our Installation & Trouble shooting Guide.

 

* Crane ® is the registered trademark of Crane , the manufacturer of Crane ® brand water treatment equipment.  The replacement filters and membranes listed above are not manufactured or endorsed by Crane .  Rather, these filters and membranes are manufactured by other companies.  While these filters and membranes are compatible for use in Crane ® brand water treatment equipment, we make no representation as to whether using these filters and membranes is consistent with the warranty and specifications applicable to Crane ® equipment.