The hm-200;is a versatile portable ph/ec/tds/temp monitor ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture, colloidal silver, labs andamp; scientific testing, pools andamp; spas, ecology testing, boilers andamp; cooling towers, water treatment and more.Specifications: measurement;range: ph: 0.00 - 14.00 phtemperature: 0.0 - 55.0 °c / 32.0 - 130 °ftds: 0 - 9999 ppm / 0 -10 pptec: 0 - 9999 µs / 0 - 20.00msatc at range: 25°c (77°f) with accuracy: ph: ± 0.1 phtemp: ± 1 °ctds: ± 2%ec: ± 2 %measurement;scales: ph: phtemp: °c, °ftds: ppm (0.5) / ppm (0.7)ec: µs / msresolution: ph: 0.1 phtemp: 0.1°c / 0.1 °ftds: ppm: 0.1 ppm (0 - 99.9 ppm) / 1 ppm (100 - 9999 ppm) / ppt: 0.01 ppt (0 - 10.00 ppt)ec: µs: 0.1 µs (0 - 99.9 µs) / 1 µs; (100 - 9999 µs) / ms: 0.01 ms; (0 - 20.00 ms)power;source:;2 x aa batteryfunction;environment:;;0 - 50°c (0-122°c) / rh 80 % (ec probe: 0 - 80°c)sensor;cable:;609mm (24-inch) shielded coaxial cabledimensions:;about 140 x 66 x 28mm (5.5 x 2.6 x 1.1 inches)weight:;200g (7 ounces) for body / 140g (5 ounces) for two probes (without case)
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