Quickly and accurately measure your water’s salinity with the Tetratec Comfort Hydrometer.
Simply dip into your aquarium’s water and allow the hydrometer to fill up. Your tank’s salinity will be shown as the hydrometer needle settles into position.
Displays both salinity and specific gravity (SG) scales.
Easy to read, clear plastic with clear markings making testing extremely simple.
Both exterior plastic and interior needle made from highly durable plastic.