OPTIMARE Precision Salinometer (OPS)
The OPTIMARE Precision Salinometer (OPS) is a high-accuracy salinity measurement instrument designed for oceanographic research, water quality monitoring, and marine environmental programmes. It measures the practical salinity of water samples with laboratory-grade precision in a compact, field-deployable package.
Laboratory-grade salinity measurement in a field-deployable instrument
The OPTIMARE Precision Salinometer measures the practical salinity of water samples using the conductivity ratio method defined in the Practical Salinity Scale 1978 (PSS-78). A thermostatted measurement cell maintains temperature stability to ±0.001 °C, enabling accuracy of ±0.002 PSU — equivalent to laboratory bench instruments. The OPS is calibrated against IAPSO Standard Seawater, ensuring traceability to international oceanographic standards. Its compact design makes it suitable for shipboard use, field stations, and laboratory environments. The OPS is used by oceanographic research institutes, hydrographic offices, and environmental monitoring agencies worldwide.
Download product handoutWhat the OPTIMARE Precision Salinometer (OPS) does
±0.002 PSU accuracy
Laboratory-grade accuracy achieved through thermostatted measurement cell and IAPSO Standard Seawater calibration.
PSS-78 compliant
Measures practical salinity on the internationally recognised Practical Salinity Scale 1978.
IAPSO traceable calibration
Calibrated against IAPSO Standard Seawater for full traceability to international oceanographic standards.
Thermostatted cell
Temperature stability of ±0.001 °C eliminates thermal measurement errors.
Small sample volume
Requires less than 200 mL per measurement — suitable for precious or limited samples.
Field deployable
Compact design suitable for shipboard use, field stations, and laboratory environments.
Key parameters
Use cases
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