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Fits all 1812 membranes with an o-ringed male product tube
where you have 3 inline filters and one membrane housing
Can Coconut carbon block filters be improved upon
Conversely
TDS3 Meter w/ Carrying Case CARBONTANK Fits all 1812 membranes withTDS3 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.
