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Aquarium Refractometers
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Milwaukee Seawater Digital Salinity Aquarium Refractometer Specific Gravity Milwaukee Instruments Seawater (Salinity) Refractometer

Product Code: RMI00887
The MA887 Milwaukee Instruments Seawater (Salinity) Refractometer is an optical instrument that employs the measurement of the refractive index to determine the salinity of natural and artificial seawater, ocean water or brackish intermediates. The digital refractometer eliminates the uncertainty associated with mechanical refractometers.

Our Price (price includes free shipping!) $119.52
In Stock
Red Sea Seawater Refractometer Red Sea Seawater Refractometer

Product Code: RRS12018
Red Seas Seawater Refractometer offers exceptional accuracy, for measuring the absolute salinity of seawater at a temperature of 77F. Most refractometers used within the aquarium hobby are not specifically designed for reef aquariums and use an algorithm for the measurement of brine (NaCl rather than seawater) and at a temperature of 59F rather than 77F.

Our Price: $67.49
In Stock
Two Little Fishies AccuraSea 250 ml Two Little Fishies AccuraSea, 250 ml

Product Code: RTL50700
With Two Little Fishies AccuraSea you can measure your salinity precisely. AccuraSea seawater reference solution is the only calibration solution of its kind made from real seawater. Its pure natural sea water micron filtered and UV sterilized then adjusted with reverse osmosis water to the standard S = 35 or conductivity of 53 mS/cm at 25C (77F). Use it to accurately calibrate seawater refractometers and check the accuracy of swing-arm hydrometers.

Our Price: $11.04
In Stock
Pinpoint Salinity Calibration Fluid American Marine Pinpoint Salinity Calibration Fluid

Product Code: RAM00601
The American Marine Pinpoint Salinity Calibration Fluid 53.0 mS is a standardized fluid for calibrating refractometers and the American Marine PinPoint Salinity Monitor.

Our Price: $9.79
In Stock