Question

it is used for salinity reading?​

Answer 1

$\huge \fbox \orange{Answer}$

The main unit that's used to measure the salinity of water is EC/w, which stands for the electrical conductivity of water. Identifying the electrical conductivity of water can tell you how much salt is currently in the water. ... When these readings dip too low, it may be time to treat the water.

Explanation:

hope it will help you buddy

Answer 2

hydrometer

The most economical way to measure salinity is a hydrometer