Red Sea Seawater Salinity Refractometer
Red Sea’s Seawater Refractometer offers exceptional accuracy, for measuring the absolute salinity of seawater at a temperature of 25 C /77 F.
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 rather than 25oC/77 0F. Thus, a measurement deviation of up to 1.5ppt is possible, which can have a significant adverse effect on coral growth and coloration.
Comes with full instructions
Low salinity brackish water for things like Puffers and Knight Gobies 1.005 at 25 Celsius
Medium salinity brackish water for things like Scats and Monos 1.010 at 25 Celsius
Freshwater Australian Turtles
at salt rate 5g per Litre
1.006 at 26 Celsius
1.005 at 24 Celsius
1.004 at 22 Celsius