We are pleased to announce our NEW HI98319 waterproof salinity and temperature tester! Waterproof and floats! Includes 4x of the Salinity Calibration Fluid Packets. Automatic Calibration – A 35.00 ppt solution is used for calibration and...

It is designed for testing the concentration of salt water and brine and used for quality control in research and clinical laboratories and marine industry. Its scale provides a direct reading of the specific gravity and concentration (part per Thousand)...

This refractometer does not come with a case or battery. The new Milwaukee MA887 Seawater Digital Refractometer encompasses 3 different types of user selected scales for the measurement of seawater providing for a much more precise evaluation. Each...

FREE ON ORDERS OF $2000 or MORE! The Basic Water Change Kit Includes: 1x - 5 Gallon Orange High Density Polyethylene Bucket ($5.00) 1x - Generic Refractometer ($24.95) 1x - JW Themometer ($5.95) 1x - Sicce Syncra Mulit 800 Pump ($31.47) 1x - 10'...

Main features of Red Sea’s Seawater Refractometer include:Directly reads the absolutesalinity ofseawaterat25°C/77 0F ( No need for seawater or temperature compensation factors)Specifically designed for the ionic content of seawater (NSW) for...