Trans Instruments (S) Pte Ltd

5 Jalan Kilang Barat #06-04/05 Petro Centre 159349 Singapore ,

Salinity Refractometer

Salt or salinity is measured in food processing and manufacturing. The control of sauces, mixtures and the dilution of concentrates requires proper control through measurement rather than relying on one's taste buds.  Trans Instruments offers two models of salinity refractometers for these purposes.  The RSA0100A displays readings in parts per thousand (ppt) or specific gravity, while the RSA0028A display readings in % of salt.

For marine aquaria, the RSA0100A also displays the specific gravity and is controlled between 1.020 to 1.026 for the optimum health of aquatic life.


  • Simple to use hand-held refractometer
  • Easy to calibrate

Technical Specification

Technical Specification


Model Description Range Resolution Accuracy
SALINITY - Salt concentration in water
Salinity/SG Refractometer
0 - 100ppt / 1-1.070SG ATC
Salinity: 0 to 100% (ppt)
1 to 1.027 SG
1% (ppt)
±1% (ppt)
RSA0028A Salinity: 0 - 28% ATC Salinity: 0 to 28% 0.2% ± 0.2%
Click to download Instructions Manual