The key component for any reverse osmosis unit is its membrane. The membrane will determine the type of contaminants removed and how much water the unit will produce. Our Captive Purity Hi-S (High Silicate) membranes are the gold ...
The Captive Purity Refractometer is an incredibly accurate and easy to use device that eliminates the confusion associated with inexpensive hydrometers. Just place a couple of drops of water on the prism and hold to the light. Rea...
Deionization cartridge - Color Change Please note that these replacement cartridges are interchangeable with Captive Purity`s, Kent Marine`s, and SpectraPure`s RO or RO/DI units. We have researched the best replacement ...
Kit Includes: 1 x 1 micron dual density gradient sediment filter 1 x 1/2 micron carbon block prefilter 1 x Color Indicating Mixed Bed DI Cartridge 1 micron dual density gradient sediment filter is highly recommended due to longer...
More than 10 percent of municipalities use chloramine for water treatment instead of chlorine. Standard carbon block filters only treats for chlorine and will allow ammonia and other impurities to reach your aquarium. A chloramine...
A quick and easy way to add De-Ionization to any RO system or to add a secondary DI stage to any RO/DI system.
Standard Add-On DI includes clear canister with mounting bracket, Color-Change DI cartridge and 10` of RO tubing.
Bulk Deionization Resin. Enough to fill one refillable DI cartridge.
* Make sure to pack the cartridge tightly to avoid channeling / bypass.