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Captive Purity Reverse Osmosis (RO) & Reverse Osmosis/Deionization units (RO/DI) System

Captive Purity represents the highest quality in reverse osmosis technology. Captive Purity Reverse Osmosis Sytems meet stringent standards and far exceeds the quality of systems from other manufacturers. A wide variety of options ranging from economy 2-stage units to top of the line 4-stage RO/DI are available to suit your exact needs. Drinking water systems and custom installation solutions are available. Captive Purity Reverse Osmosis Systems are engineered and manufactured under strict guidelines to produce extremely pure water with exceptional focus on minimizing phosphates and silicates. This is a very important feature for reef aquariums.
  • Remove over 98% of all ionic impurities.
  • Remove over 95-96% of organic impurities.
  • Remove colloidal and particulate impurities.
  • Remove micro-organisms and pyrogens.
  • Remove chlorine, chloramines, pesticides, etc.
2-Stage Compact RO Systems
2-stage Compact Reverse Osmosis (RO) System
  • Ultracompact and economical reverse osmosis system.
  • 1500 gallon chlorine removal capacity sediment/carbon combo inline prefilter.
  • High flow and rejection TFC membrane
  • All systems include a non-corrosive 3/4" plastic garden hose adapter (non-brass).
Note: A flush valve can significantly enhance the life of TFC membrane by flushing out any harmful impurity from the membrane.
Item #DescriptionPrice 
CP1111Captive Purity 35 GPD Compact RO$98.99
3-Stage Deluxe RO Systems
3-Stage Deluxe Reverse Osmosis (RO) System
  • 1 micron sediment prefilter.
  • 5 micron carbon prefilter.
  • High flow and rejection TFC membrane.
  • Available in white or clear.
  • All systems include a non-corrosive 3/4" plastic garden hose adapter (non-brass).
Note: A flush valve can significantly enhance the life of TFC membrane by flushing out any harmful impurity from the membrane.
Item #DescriptionPrice 
CP1121Captive Purity 35 GPD Deluxe RO Filter System - White Canisters$149.99
CP1123Captive Purity 75 GPD Deluxe RO Filter System - White Canisters$154.99
CP1131Captive Purity 35 GPD Deluxe RO Filter System - Clear Canisters$154.99
CP1133Captive Purity 75 GPD Deluxe RO Filter System - Clear Canisters$209.99
3-Stage Pro RO Systems
3-Stage Pro Reverse Osmosis (RO) System
  • 1 micron sediment prefilter.
  • Very high efficiency 0.5 micron carbon prefilter
  • High silica and phosphate rejection TFC membrane.
  • Pressure guage for easy monitoring.
  • Quick connect and disconnect John Guest Super Speedfit fittings.
  • All systems include a non-corrosive 3/4" plastic garden hose adapter (non-brass).
Note: A flush valve can significantly enhance the life of TFC membrane by flushing out any harmful impurity from the membrane.
Item #DescriptionPrice 
CP1141Captive Purity 35 GPD Pro RO Filter System - Clear Canisters$179.99
CP1143Captive Purity 75 GPD Pro RO Filter System - Clear Canisters$219.99
4-stage Deluxe RO/DI Systems
4-Sage Deluxe Reverse Osmosis / Deionization (RO/DI) System  
  • 1 micron sediment prefilter.
  • 5 micron carbon prefilter.
  • High flow and rejection TFC membrane.
  • Color Change DI cartridge for easy monitoring and maintenance
  • All systems include a non-corrosive 3/4" plastic garden hose adapter (non-brass).
Note: A flush valve can significantly enhance the life of TFC membrane by flushing out any harmful impurity from the membrane.
Item #DescriptionPrice 
CP1331Captive Purity 35 GPD Deluxe RO/DI Filter System - Clear Canisters$214.99
CP1333Captive Purity 75 GPD Deluxe RO/DI Filter System - Clear Canisters$229.99 $189.99
4-stage Pro RO/DI Systems
4-Stage Pro Reverse Osmosis / Deionization (RO/DI) System  
  • 1 micron sediment prefilter.
  • Very high efficiency 0.5 micron carbon prefilter
  • High silica and phosphate rejection TFC membrane.
  • Pressure guage for easy monitoring.
  • Quick connect and disconnect John Guest Super Speedfit fittings.
  • All systems include a non-corrosive 3/4" plastic garden hose adapter (non-brass).
Note: A flush valve can significantly enhance the life of TFC membrane by flushing out any harmful impurity from the membrane.
Item #DescriptionPrice 
CP1341Captive Purity 35 GPD Pro RO/DI Filter System - Clear Canisters$279.99
CP1343Captive Purity 75 GPD RO/DI Pro RO/DI Filter System - Clear Canisters$299.99
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