many pack tester pH and EC Tester range HM digital instruments, find HM digital cheap in culture indoor pro culture
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HM Digital offers you control your water with one tool: the Hydro Master. Improve your culture hydro ponique controlling from A to Z Water your plants.
The tester Hydro Master Digital makes controlling the water easier than ever. It allows easy reading level that matters most to you and supplied pre reading cis e you need. Continuous Monitor pH / EC / TDS / Temp with its rechargeable battery. Portable, wall mount or use the ground. Technical characteristics : pH tests on a range of pH 0 to pH 14, Temperatures of 30 ° F to 176 ° F, 0-9999 ppm TDS * and EC 0-9999 ps. Stores up to 20 measurement values, so you can monitor changes over time. LCD...