Two Little Fishies AccuraSea

AccuraSea Seawater Reference Solution is the only calibration solution of its kind made from real seawater. It is pure natural sea water, micron filtered and UV sterilized then adjusted with reverse osmosis water to match the S 35 standard at 25_C (77_F). Use it to accurately calibrate seawater refractometers and to verify the accuracy of swing arm hydrometers. You can also use it as a reference for test kits used to measure the concentrations of various components of seawater, as it is natural seawater with the correct and well-known concentrations of all salts dissolved.