The Aquarium Systems SeaTest Hygrometer is an easy to use scientific instrument that is used both to measure the specific weight and the density of the water in tropical marine aquariums.
It is specially designed to provide accurate measurements of specific weight from 1.000 to 1.030 and salinity from 0 to 40 parts per thousand.
Features:
Accurate measurements of specific weight from 1.000 to 1.030
Accurate measurements salinity from 0 to 40 parts per thousand
Easy to clean
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