The New HI98319 Marine Salinity Tester from Hanna Instruments



Hanna Instruments has long been recognized as a leader in testing products and today we are pleased to announce a new water testing product that was just announced. Meet the new Hanna HI98319 Marine Salinity Tester.

Designed to bring simplicity to salinity testing process, 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. The handheld pocket tester displays results in parts per thousand (ppt), Practical Salinity Units (PSU), or specific gravity (S.G.). It comes with all the necessary solutions and batteries – everything you need to get started measuring right away.


The tester is ideal for testing salinity in aquariums, field, and industrial settings.

An onscreen stability indicator ensures the highest level of confidence in your results. The selectable auto-off feature prolongs battery life and energy savings in the event that the meter is accidentally left on.


The compact size makes the HI98319 Marine Salinity Tester ideal for on-the-go testing. The multilevel LCD display provides at-a-glance salinity and temperature readings from any angle while dual button operation streamlines the testing process for any user.


The tester uses a standard CR2032 Li-ion battery that will provide up to 100 hours of continuous use and the battery icon will blink to let you know when it is time to swap out the battery. HI98319 Marine Salinity Tester


This might be one of the most important features that other electronic salinity testers lack. Many salinity testers use stainless steel sensors that can impact accuracy and polarization. The Hanna HI98319 uses graphite sensors which reduces polarization effects and since graphite will not oxidize in salt water, graphite provides more reliable and accurate readings. The tester is sealed from the elements and if you accidentally drop in salt water it floats for easier recovery.


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.

HI98319 Marine Salinity Tester


When performing a calibration it is important that the correct buffers are used. Hanna includes some starter buffer to get you going. The single-use sachets are individually sealed so you use fresh buffer each time you calibrate.

Whats Included

The HI98319 salinity tester comes with a carrying case, CR2032 battery (already inside the meter), Storage / Protection sleeve, Instruction manual, Quality certificate, and 35.00 ppt calibration standard sachet (4 pcs.)


RANGE 0.0 to 70.0 ppt (g/L)

0.0 to 70.0 PSU

1.000 to 1.041 S.G.

RESOLUTION 0.1 ppt (g/L)

0.1 PSU


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 ACCURACY (@ 25°C/77°F) ±0.5°C; 1°F
CALIBRATION automatic, single point 35.00 ppt
METHOD ppt – International Oceanographic Tables

PSU – Standard Methods for the Examination of Water and Wastewater, 2510 B, Electrical Conductivity Method

S.G.- Standard Methods for the Examination of Water and Wastewater, 2510 C, Density Method

WEIGHT 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
ENVIRONMENT 0 to 50 °C (32 °C to 122 °F); RH max 100%
ORDERING INFORMATION Each meter is supplied with: CR2032 battery (inside the meter), Storage / Protection sleeve, Instruction manual, Quality certificate, and 35.00 ppt calibration standard sachet (4 pcs.)

About Author

Scott Groseclose is the owner of AquaNerd, Aquarium Specialty, Aqua Specialty Wholesale, BioTek Marine, & The Carolina Reef Experience. He has a degree in Biology from St. Andrews University and he has been a passionate reef keeper since 1988.