Red Sea Seawater Refractometer

Red Sea's Seawater Refractometer is made for reading the salinity of seawater and is calibrated at 25°C, the temperature most reef tanks run at. Most hobby refractometers are set up for salt brine at 15°C and can read up to 1.5 ppt out, so this one gives you the real figure without conversion tables. Let the refractometer and your water sample settle to the same temperature before you take a reading.

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Details

Category

Equipment & supplies

Brand

Red Sea

Measures

Absolute salinity of seawater

Calibration

Natural seawater at 25°C

Scale

ppt, up to 40 ppt

Temperature compensation

Automatic (ATC)

Suitable for

Reef and marine aquariums