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.