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Exclusive easy to replace cartridge stainless steel pH and ORP Electrode
Specifically designed for the ionic content of seawater (NSW) for more accurate salinity measurement (industry standard refractometers are calibrated for salt brine )
The design allows the user to easily wipe off the sample
The auto shut-off feature assures the battery life will not be drained if you forget to turn it off
colostrum quality (Brix)
Red Sea Seawater Salinity Refractometer DEF Exclusive easy to replace cartridgeRed Sea Seawater Refractometer Product #: RED R12018 REFURBISHED and have A FULL 3 YEAR WARRANTY! Red Seas Seawater Refractometer offers exceptional accuracy, for measuring the absolute salinity of seawater at a temperature of 25oC 77 0F. 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 15oC 59 0F
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