Reef Crest Salinity Refractometer The Reef Crest Salinity Refractometer is a precision handheld optical instrument for measuring seawater salinity and specific gravity in reef aquariums, marine aquariums, aquaculture systems and laboratory water testing. Handheld Salinity Testing for Marine Aquariums Accurate salinity measurement is essential for reef and saltwater aquarium stability. This Reef Crest refractometer provides clear dual-scale readings, making it easier to check freshly mixed saltwater, verify aquarium salinity during maintenance and monitor systems where stable specific gravity is important. Reef Crest Salinity Refractometer Features Dual-scale optical design measures salinity and salt density in one reading. Automatic Temperature Compensation helps stabilize readings without manual correction. Copper body construction provides durability, thermal stability and corrosion resistance. High-clarity prism and scale produce sharp boundaries for repeatable readings. Portable handheld format for aquarium maintenance, field testing and laboratory use. Includes protective storage case and calibration accessories. Calibration solution is not included; use distilled or RO water. Refractometer Specifications Salinity measurement range: 0 to 100 per mille. Salinity resolution: 1 per mille. Salinity accuracy: ±1 per mille. Salt density range: 1.000 to 1.070 g/mL. Salt density resolution: 0.001 g/mL. Salt density accuracy: ±0.001 g/mL. Temperature compensation: Automatic Temperature Compensation ATC. ATC operating temperature range: 10 C to 30 C. Body material: copper. Length: 203 mm. Diameter: 29 mm. Net weight: 0.28 kg. Directions Calibrate the refractometer before first use. Allow the refractometer and sample water to reach room temperature, then open the daylight plate and place several drops of sample water on the prism. Close the plate to spread the liquid evenly, point the refractometer toward a bright light source and read the value at the light-dark boundary on the scale. Rinse the prism with fresh water after use and dry with a soft cloth. Calibrate periodically using distilled or RO water and the adjustment screwdriver. What's Included Reef Crest Salinity Refractometer. Calibration screwdriver. Sample dropper. Cleaning cloth. Protective storage case. User manual.
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