The JBL hydrometer + thermometer + measuring vessel set for measuring salt density in marine water aquariums contains a measuring cylinder with which measurements can be conducted outside of the aquarium. It is very challenging if not impossible to take a reading on the mostly moving water surface in aquariums.
In order for the test cylinder to stand more securely and also remain watertight at the lower end, JBL improved the cylinder and the accuracy of the precision hydrometer as well as the packaging. The new, larger and screwable stand replaces the triangular base which had merely been clicked on and was thus sometimes rather wobbly.
A new quality control ensures that the temperature corrector and scale integrated in the precision hydrometer is highly accurate. Due to high demand it is possible for the price of the JBL precision hydrometer to remain unchanged.