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This Digital Refractometer is a rugged, portable, water resistant device that utilizes the measurement of the refractive index to determine the salinity of natural and artificial seawater, ocean water or brackish intermediates.
This unit eliminates the uncertainty associated with mechanical refractometers and is rugged and portable enough to be used at home, in the lab and out in the field. It is quick and easy to use and can be calibrated with distilled or deionized water.
The refractive index is measured and can be converted into one of 3 popular measurement units: Practical Salinity Units (PSU), Salinity in parts per thousand (ppt), or Specific Gravity (S.G. (20/20)). All conversion algorithms are based upon respected scientific publications using the physical properties of seawater (not sodium chloride).
Temperature (in degrees Celcius or degrees Fahrenheit) is displayed simultaneously with the measurement on the large dual level display along with icons for Low Power and other helpful message codes.
Range (PSU): 0 - 50
Range (ppt): 0 - 150
Range (Specific Gravity 20/20): 1.000 - 1.114
Range (Temperature): 0 - 80 degrees Celcius (32 - 176 degrees Fahrenheit)
Resolution (PSU): 1
Resolution (ppt): 1
Resolution: (Specific Gravity 20/20): 0.001
Resolution (Temperature): +/- 0.1 degrees Celcius (0.1 degrees Fahrenheit)
Accuracy (PSU): +/- 2
Accuracy (ppt): +/- 2
Accuracy (Specific Gravity 20/20): +/- 0.002
Accuracy (Temperature): +/- 0.3 degrees Celcius (0.5 degrees Fahrenheit)
Temperature Compensation: Automatic between 10 and 40 degrees Celcius (50 - 104 degrees Fahrenheit)
Measurement Time: Approximately 1.5 seconds
Light Source: Yellow LED
Sample Cell: Stainless steel ring and flint glass prism
Auto-off: After 3 minutes of non-use
Enclosure Rating: IP 65
Battery Type / Battery Life: 9V / Approximately 5000 readings
Dimensions / Weight: 192 x 102 x 67 mm / 420 g
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