Hanna Instruments


Sorry, currently out of stock

Click here to be notified by email when MARINE SALINITY TESTER HI98319 becomes available.
  • Designed to bring simplicity to salinity testing, the HI98319 Marine Salinity Tester measures conductivity (EC) to determine the salinity of natural and artificial seawater. Within seconds, the salinity and temperature are digitally displayed on the LCD
  • Displays results in parts per thousand (ppt), Practical Salinity Units (PSU), or specific gravity (S.G.)
  • Comes with all the necessary solutions and batteries- everything you need to get started measuring right away.
  • The included CR2032 Li-ion battery provides up to 100 hours of continuous use. The battery icon will blink to let you know it is time to change the battery so you never miss a measurement.
  • Unlike stainless steel sensors, graphite sensors reduce polarization effects and does not oxidize for more reliable and accurate readings.
  • Designed to withstand the knocks, drops, and spills of real life, the waterproof body ensures top performance in any environment. These meters are totally protected against dust and water intrusion from any direction. 
  • Conductivity measurements are very sensitive to temperature variations. HI98319 has an exposed temperature sensor to ensure fast, accurately compensated readings even during sudden temperature fluctuations

Whats in the Box:

  • HI98319 Salinity Tester (with CR2032 Battery)
  • Protective Case
  • 4 Calibration sachet  (35PPT)
  • Instructions 


  • Range

    0.0 to 70.0 ppt (g/L)

    0.0 to 70.0 PSU

    1.000 to 1.041 S.G.


    0.1 ppt (g/L)

    0.1 PSU

    0.001 SG

    Accuracy (@25ºC/77ºF)

    ±1 ppt for 0.0 to 40.0 ppt; ±2 ppt for readings over 40.0 ppt

    ±1 PSU for 0.0 to 40.0 PSU ; ±2 PSU for readings over 40.0 PSU

    ±0.001 S.G.

    Temperature Range

    0.0 to 50.0°C; 32.0 to 122.0°F

    Temperature Resolution

    0.1°C; 0.1°F

    Temperature Accuracy (@ 25°C/77°F)

    ±0.5°C; 1°F


    automatic, single point 35.00 ppt 


    68 g (2.4 oz.) without battery

    Temperature Compensation

    automatic from 5 to 50.0 ºC 

    Battery Type / Life

    CR2032 3V Li-Ion (1 pc.)/ approximately 100 hours of continuous use 


    0 to 50 °C (32 °C to 122 °F); RH max 100% 


Customer Reviews

Based on 2 reviews Write a review

Customer Reviews

Based on 2 reviews
Jae K

really really like this for my saltwater mixing station. I add salt wait a minute and dip. Then adjust as needed and do a follow up check the next day but so far it's always been the same.

Goodbye Refractometer

I'm so happy to say goodbye to my refractometer, it's served me well for many years but I'm tired of dripping saltwater onto the slide and then starring through toward a light. This is dip, read, rinse and put away.