a slow ion-exchange process releases these minerals into solution — gradually and continuously over the stone’s 2-year service life

Complete Package: Includes hard carrying case for secure transport and storage

Nursery and propagation facilities

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

Hanna HI981004 Pool Line Checker Plus | pH Tester | 0.01 Resolution dual TDS meter a slow ion-exchange process releasesProfessional 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