Hanna Instruments HI98302 DiST2 TDS Tester, 10.00g/L, 0.01g/L Resolution, +/-2% Accuracy

DiST's are rugged and reliable pocket-sized testers that offer quick and accurate readings of conductivity or TDS. The DiST TDS tester is widely used for monitoring EC/TDS in drinking water, water conditioning, reverse osmosis, cooling towers, wastewater, laboratories, agriculture, aquaculture and aquariums, hydroponics and the printing industry. This tester features an amperometric graphite electrode that provides better repeatability in measurements since they do not oxidize. An amperometric measurement of TDS is based on Ohm's Law, I = V/R where R depends on the distance between two pins and their surface. Oxidation changes both the distance and surface which will affect accuracy. The DiST's non-oxidizing graphite pins are able to provide an optimal surface for accurate, dependable results. When calibration is necessary, simply submerge the electrode tip into calibration solution and adjust the trimmer on the side of the tester. Easy to use. Economical. DiST2 is supplied with protective cap, screwdriver, batteries and instructions. 10.00 g/L range. 0.01 g/L resolution. +/-2 percent FS accuracy. 0.5 TDS factor. 6.44 g/L TDS calibration solution. manual, 1 point calibration. Spare amperometric graphite probes probe. automatic, 0 to 50 degree C temperature compensation. 4 x 1.5V/approximate 200 hours of continuous use battery type/life. 0 to 50 degree C, RH maximum 95 percent environment. Measures 1-19/32" length by 57/64" width by 6-57/64" height. Weight: 3.4 ounces.