Take the guesswork out of aquarium salinity testing with the Hanna HI98319 Marine Salinity & Temperature Tester. Designed specifically for natural and artificial seawater, this compact digital tester measures salinity through electrical conductivity and displays the results within seconds.

Choose between parts per thousand, Practical Salinity Units, or specific gravity to match your preferred testing method. Automatic temperature compensation helps provide consistent results as water temperature changes, while the built-in temperature sensor displays salinity and temperature together on the easy-to-read LCD screen.

The waterproof, pocket-sized design makes the HI98319 ideal for routine aquarium maintenance, water changes, saltwater mixing stations, aquarium service work, and on-the-go testing. It also includes calibration solution, a protective storage sleeve, and an installed battery, so it is ready to use right out of the box.

KEY FEATURES

• Measures salinity and temperature within seconds
• Displays salinity in ppt, PSU, or specific gravity
• Automatic temperature compensation
• Integrated temperature sensor
• On-screen stability indicator
• Waterproof and designed to float
• Graphite conductivity sensor resists oxidation
• Selectable automatic shutoff
• Low-battery indicator
• Compact, portable design
• Approximately 100 hours of continuous battery life
• Calibration solution and battery included

MEASUREMENT RANGE

• Salinity: 0.0 to 70.0 ppt
• Practical Salinity Units: 0.0 to 70.0 PSU
• Specific Gravity: 1.000 to 1.041 S.G.
• Temperature: 32.0°F to 122.0°F

RESOLUTION

• Salinity: 0.1 ppt
• PSU: 0.1 PSU
• Specific Gravity: 0.001 S.G.
• Temperature: 0.1°F or 0.1°C

ACCURACY

• Salinity: ±1 ppt from 0.0 to 40.0 ppt
• Salinity above 40.0 ppt: ±2 ppt
• Specific Gravity: ±0.001 S.G.
• Temperature: ±1°F or ±0.5°C

CALIBRATION

Automatic single-point calibration using 35.00 ppt salinity standard.

WHAT’S INCLUDED

• Hanna HI98319 Marine Salinity Tester
• Four 35.00 ppt calibration solution sachets
• CR2032 battery installed
• Protective storage sleeve
• Instruction manual
• Quality certificate

WHY CHOOSE THE HANNA HI98319?

Traditional refractometers can be difficult to read and require carefully interpreting a thin reference line. The Hanna HI98319 provides a clear digital result, making routine salinity testing faster and easier. Its portable design is useful for testing aquarium water, newly mixed saltwater, quarantine systems, and multiple aquariums.

IMPORTANT TESTING INFORMATION

For best results, rinse the sensor with fresh water after each use and recalibrate regularly using fresh 35.00 ppt calibration solution. Allow the stability indicator to appear before recording your measurement.

SHIPPING INFORMATION

This item ships through our standard equipment shipping service. Orders are carefully processed and securely packaged to help protect the tester during transit.