Solutions are available in many sizes ranging from 20ml sachets for small users to 3

Foam-Lined Sealed Cap — Prevents evaporation and contamination between uses

Why Limescale Destroys Evaporative Coolers

5V button cell batteries (included)  (LR44 or equivalent)

5 × M10010B — pH 10

Hanna HI98319 Marine Salinity Tester - Waterproof ppt/PSU/S.G. for Aquariums & Seawater ice machine hard water filter Solutions are available in manyDesigned 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