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...
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.
Deluxe Add-On DI includes clear canister with mounting bracket, DI cartridge, 10` of RO tubing and an In-Line TDS M...