Hanna HI98319 Marine Salinity Tester - Waterproof ppt/PSU/S.G. for Aquariums & Seawater 877267006010 It also features a triple

It also features a triple ceramic junction in the outer junction and the conical pH sensing portion is made with low temperature glass

you can measure pH to assess acidity/alkalinity

2 ounces for body / 5 ounces for two probes (without case)

4 Stage 75GPD RODI System

with all necessary accessories organized and accessible

Hanna HI98319 Marine Salinity Tester - Waterproof ppt/PSU/S.G. for Aquariums & Seawater 877267006010 It also features a tripleDesigned to bring simplicity to salinity testing, the HI98319 Marine Salinity Tester measures conductivity (EC) to determine the salinity of natural and artificial seawater. Within seconds, the salinity and temperature are digitally displayed on the LCD. Displays results in parts per thousand (ppt), Practical Salinity Units (PSU), or specific gravity (S. G.). Comes with all the necessary solutions and batteries everything you need to get started