eSHa Marinomat salt meter
First squeeze the squeeze bag so that there is no more air in it, then insert the suction hose into the aquarium and let go of the squeeze bag so that the meter is completely !! is filled with water. Now the specific weight can be read.
Rinse with fresh water after use !!
Accurate indication within the required temperature range with its own temperature compensation. The needle indicates correctly even when the device is at an angle.
Made of sturdy plastic in a handy shape.