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Customer Support

MA887

Digital Refractometer for Seawater Measurements

1 in stock (can be backordered)

$ 232.86 Ex. GST

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The MA887 is an optical instrument that employs the measurement of the refractive index to determine the salinity of natural and artificial seawater, ocean water or brackish intermediates.
The digital refractometer eliminates the uncertainty associated with mechanical refractometers and is easily portable for ship, shore or home use.

The MA887 refractometer is an optical device that is simple and quick to use. Samples are measured after a simple user calibration with distilled or deionized water. Within seconds, the refractive index and temperature are measured and converted into one of three 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). The temperature (in °C or °F) is also displayed on the large dual level display along with helpful message codes.

Key features include:

  • Automatic Temperature Compensation (ATC)
  • Battery operation with Low Power indicator
  • Automatically turns off after 3 minutes of non-use.

 

ORDERING INFORMATION
MA887 instrument is supplied with:
• 9 V battery
• Instruction manual

Specifications

Range 0 to 50 PSU
0 to 150 ppt
1.000 to 1.114 S.G. (20/20)
0 to 80°C / 32 to 175°F
Resolution 1 PSU
1 ppt
0.001 S.G. (20/20)
0.1°C / 0.1°F
Accuracy ±2 PSU
±2 ppt
±0.002 S.G. (20/20)
±0.3°C / ±0.5°F
Light Source Yellow LED
Measurements Time Approximately 1.5 seconds
Minimum Sample Volume 100 µL (cover prism totally)
Sample Cell SS ring and flint glass prism
Temperature Compensation Automatic between 10 and 40°C / 50 to 104°F
Case Material ABS
Battery Type 1 x 9V AA (included)
Battery Life 5000 reading
Auto-shut off after 3 minutes of non-use
Dimensions 192 x 102 x 67 mm
Weight 420 g

Literature

Brochure

Instruction Manual