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Hanna Instruments Marine Salinity Tester

Hanna Instruments

Brand: Hanna Instruments

MPN: HI98319

Price: $69.00

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Hanna Instruments Marine Salinity Tester

The Marine Salinity Tester from Hanna Instruments comes with everything you need to successfully run salinity tests right out the box and includes a protective carrying case for when it is not in use. This tester features graphite sensors that reduce polarization effects and do not oxidize. The LCD screen can display your crystal clear readings in parts per thousand (ppt), Practical Salinity Units (PSU), or specific gravity (S.G.). Since salinty measurements can be affected by fluctuations in temperature, this meter incorporates a temperature probe for accurate readings. Upgrade your testing regimen with this piece of advanced instrumentation!


  • General term that describes the concentration of salt in water
  • Solutions of different types of salts have different refractive indexes
  • Brine - Solution of sodium chloride (NaCl; table salt) that contains 2 chemical elements
  • Seawater - Solution of approximately 70 chemical elements including calcium, magnesium, potassium, sodium chloride, etc.
  • Seawater and Brine with the same salinity (i.e. same weight of salt/liter) have different refractive indexes and will give different salinity readings when measured with the same refractometer


  • Onscreen stability indicator
  • Pocket sized
  • Long battery life
  • Graphite sensors
  • Durable casing
  • Integrated temperature probe
  • Everything you need for successful testing out of the box
  • Calibration solution included and sold separately
  • Protective Case


  • Displays results in parts per thousand (ppt), Practical Salinity Units (PSU), or specific gravity (S.G.)
  • Comes with all the necessary solutions and batteries
  • Ideal for testing salinity in aquariums
  • Onscreen stability indicator ensures highest level of confidence in your results
  • Selectable auto-off feature prolongs battery life
  • Compact size makes it ideal for on-the-go testing
  • Multi-level LCD display provides at-a-glance salinity and temperature readings from any angle
  • Dual button operation streamlines the testing process
  • Included CR2032 Lithium Ion battery provides up to 100 hours of continuous use
  • Battery icon will blink to let you know its time to change the battery
  • Graphite sensors reduce polarization effects and will not oxidize
  • Designed to withstand knocks, drops, and spills of real life
  • Waterproof body ensure top performance in any environment
  • Totally protected against dust and water intrusion from any direction
  • Has an exposed temperature sensor to ensure fast, accurately compensated readings
  • Comes in a carrying case to keep the tester safe from potential drops or bumps when not in use



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 S.G.

Accuracy @ 25°C/77°F

±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 Range0.0-50.0°C/32.0-122.0°F
Temperature Resolution0.1°C/0.1°F
Temperature Accuracy (@ 25°C/77°F)±0.5°C/1°F
CalibrationAutomatic, single point 35.00 ppt

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

Weight2.4 oz (68 g) without battery
Temperature CompensationAutomatic from 5-50.0°C
Battery Type1 - CR2032 3V Li-Ion
Battery LifeApproximately 100 hours of continuous use
Environment0-50°C (32-122°F); RH max 100%

What's in the Box:

  • 1 - Marine Salinity Tester
  • 1 - CR2032 3V Lithium Ion Battery (inside the meter)
  • 1 - Storage/Protection Sleeve
  • 1 - Quality Certificate
  • 4 - 35.00 ppt Calibration Solution Sachets

Additional Info

Additional Info
Manufacturer Hanna Instruments
MPN HI98319
Water Type Marine
Meters & Controllers - Parameter Salinity
Meters & Controllers - Analog/Digital Digital
Water Tests & Treatment -0 Parameter Salt

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Customer Reviews

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2 Item(s)

Hanna Salinity Tester
Date Reviewed:
Location: Virginia Beach
Age: 35
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Great little item here. I received mine on water change day and it helped greatly. I love the accuracy and ease of use. Very happy I bought this.
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Easy as pie
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This tester from Hanna is the easiest tester I have used. It is easy to clean and re-calibrate. The fact that it takes temp into account when making readings is something that I have not seen any other tester do. I will be using this tester from now on and will be telling everyone I know to do the same.
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