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you control the speed upwards or downwards
0-10V controller compatible
Phosphorus as Mono Amonia Phosphate
Construction
HM PH Pen PH80 Grow Blocks you control the speed upwardsHM PH 80 Hydrotester It is important to measure pH in water and other liquids, especially if the water is treated with nutrients, chemicals or other additives, particularly for applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks and water ionizers. Specifications: pH Temp Range 0 14 1 55C 32 130F Accuracy 0. 2 pH 2 % Scales pH C, F Resolution 0. 1 pH 0. 1C 0. 1F Operating Environment 0 50 C (32 122 F) Calibration Digital
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US$ 14.00