Dag PH and Thermometers sku-6905272047 Chlorine Meter

The Dag 7 in 1 water quality tester, sku-6905272047, is listed under PH and Thermometers. It measures pH, free available chlorine (FAC), salt, EC, TDS, ORP and temperature for pool, aquarium, spa and hydroponic water. The pH range is 0.1-14.0, with 0.1ph resolution and ±0.1ph accuracy. FAC range: 0.1-4.0ppm.

Salt ranges: 0-10000ppm, 10.1-200.0ppt and 0.01%-25.00% (1000ppm=1ppt); resolution: 1ppm or 10ppm; accuracy: ±2% F.S. EC ranges: 0-10000uS/cm, 10.01-19.99mS/cm and 20.1-400.0mS/cm; resolution: 1uS/cm, 10uS/cm or 0.01mS/CM; accuracy: ±2% F.S. TDS ranges: 0-10000ppm and 10.1-200.0ppt; resolution: 1ppm or 10ppm; accuracy: ±2% F.S. ORP range: ±999mv; resolution: 1mv; accuracy: 15mv.

Temperature ranges: 0.0-60.0 and 32.0-140; resolution: 0.1/0.1; accuracy: ±0.5. The meter measures 42*42*183mm and uses 4*1.5V LR44 batteries, which are not included. Listed calibration points are pH 6.86/4.00/9.18 and ORP 222mv. The source says all functions are calibrated before dispatch.

For hydroponic water, it gives 72.0-75.0°F, pH 5.5-6.0 and EC 1.2-2.0mS/cm as reference values, with an optimal EC range of 800-2400uS/cm. Its pool reference ranges are pH 7.2-7.8, ORP 650-750mV, FAC 1-3ppm and salt 2700-3400ppm; the source says these ranges support clean water, body comfort and salt chlorinator efficiency.

TDS means Total Dissolved Solids, measured in PPM; lower TDS indicates purer water. The source states that a TDS reading of 40 or less is generally considered safe for drinking and recommends pH 7.2-7.8 for pool performance. The package contains 1 water quality tester, 1 English manual, 3 PH calibration liquids and 1 ORP calibration liquid.