you can calculate your pore water conductivity and saturated extract conductivity from the result

high and low alarm set points

Low Temperature (LT) Glass

High Range Testing: Measures copper from 0 to 5

Thousands of saltwater aquarium enthusiasts have dialed in the analysis with Milwaukee's salinity refractometer

Hanna HI981004 Pool Line Checker Plus | pH Tester | 0.01 Resolution dual TDS meter you can calculate your poreProfessional pH testing designed specifically for swimming pools, hot tubs, and spas. The Hanna HI981004 Pool Line Checker Plus pH Tester delivers precise 0. 01 pH resolution with 0. 2 pH accuracy, featuring a replaceable electrode, automatic calibration, and simple one button operationmaking pool water testing fast, accurate, and hassle free. Key Features & Benefits Pool specific design Engineered for swimming pool, hot tub, and spa water testing