The MR series refractometers are precision optical instruments used for measuring aquarium water salinity. They work using principle of light refraction through liquid.
Specifications:
* Range:
PSU: 0 - 50
PPT 0 - 150 S.G.: 1.000 - 1.114
* Resolution:
PSU: 1
PPT: 1
S.G.: 0.001
Temp: 0.1 C/F
* Accuracy:
PSU: ±2
PPT: ±2
S.G.: ±0.002
Temp: ±0.3C / ±0.5F
Temp: 0 - 80C / 32 - 176F
* Calibration: automatic
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