We build and test this system from the ground up and heavily box this item

Do not use with flammable or hazardous fluids

Among increasing the water PH value

However you can reduce the waste water by about 25% by adding a second membrane to the system

For use on all 10" RODI systems

TDS3 Meter w/ Carrying Case FAUCET We build and test thisTDS3 Meter with Carrying Case HM Digital TDS 3 meter (with carrying case) FEATURES: Ideal for commercial use. Includes a carrying case with belt clip. Highly efficient and accurate due to its advanced microprocessor technology. Measures TDS as well as the water temperature. Hold Function: saves measurements for convenient reading and recording. Auto off function: the meter shuts off automatically after 10 minutes of non use to conserve batteries.