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but you should calibrate at least once per month for proper results and a longer lifespan of your meter
Catalytic Carbon Cartridge Filter Overview
A constant supply of high purity water can be obtained by using two cartridges in series
The GEM coconut carbon block filter
PH-200 Waterproof PH Meter POD Shop DI resinPH 200 Waterproof PH Meter Ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment, wine, coffee, agriculture and more. Standard Features FEATURES Measures pH and Temperature Auto ranging three point calibration with digital fine tuning Includes storage solution in a sponge embedded
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