Hanna Instruments

Marine Master Bluetooth Multiparameter Photometer HI97115

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One Meter to Rule them All-- Now with Bluetooth!

Accurately check pH, Alkalinity, Calcium, Low Range and High Range Nitrate, Ultra Low Range Nitrite, and Ultra Low Range Phosphate with one single, compact multiparameter tester. Then use the integrated Bluetooth to connect to the Hanna Lab App (via a compatible smart device) where you can log your results, add notes, share your data, and create method groups for future testing.


All-In-One Testing with Precise Results for Reef Tanks
The HI97115 Marine Master Photometer is a waterproof tester that combines accuracy and ease of use into one simple, portable design. Now with Bluetooth capability, you can easily log and save your results in the Hanna Lab App. Its advanced, lab-quality optical system ensures accurate readings while its user-friendly design and built-in tutorials make it perfect for marine scientists and aquarium hobbyists alike.

  • Test 9 parameters with a single unit
  • Precise and advanced LED optical system
  • Waterproof and floating IP67 meter design
  • Backlit LCD and on-screen help guides
  • Built in reaction timer for consistent testing
  • CAL Check validation and calibration
  • Auto-data logging to easily record results
  • Option to track which aquarium measurements are from for multi-tank homes
  • Auto shut-off
  • Locking system to hold cuvettes in same position every test
  • Rugged carrying case included


Precise Laboratory Testing, Simplified
The Marine Master Photometer comes equipped with user-friendly on-screen tutorials and animations to help guide you through every step of setup, calibration, and testing. You can easily access this Tutorial Mode at any stage of the setup or measurement process by tapping the dedicated Help key.

Smart Energy Use
When the battery level is below 10%, a warning symbol will blink to indicate low battery condition. When low battery power may affect your results, the meter will shut down to avoid erroneous readings caused by low battery level. In order to preserve battery life, the Marine Master has an Auto-Off feature that will automatically power down the device after 15 minutes of inactivity.


Auto Data Logging
The Marine Master will automatically log your results, so there is no need to worry if you’ve missed recording a measurement. The last 50 measurements can be instantly viewed using the Log Recall Menu.


CAL Check Validation
Hanna’s exclusive CAL Check feature provides a stress-free, straightforward way to ensure your photometer is working properly. Simply insert the certified CAL Check standards and let your meter guide you through validation. If your photometer is out of specification for any reason, simply calibrate to your standard.


Advanced Optical System
The Marine Master has an advanced optical system that uses a Light Emitting Diode (LED) and a narrow band interference filter that allows for accurate and repeatable readings. The internal reference system of the photometer compensates for any drifts due to power fluctuations or ambient temperature changes, providing a stable source of light for the blank (zero) measurement and sample measurement. Improved optical filters ensure greater wavelength accuracy and allow a brighter, stronger signal to be received. A focusing lens collects all of the light that exits the cuvette, eliminating errors from cuvette imperfections and scratches. The end result is highly reliable lab-grade readings in the palm of your hand.


Durable & Portable Design
Designed to withstand the knocks, drops, and spills of real life, the new IP67 body ensures top performance in any environment. Internal optics are sealed from outside dust, dirt, and water. The meter also floats, so you can easily retrieve it if you drop it in water. This photometer uses an exclusive positive‑locking system to ensure that the cuvettes are placed into the holder in the same position for accurate readings every time.

The Marine Master also fits comfortably in your hand for on-the-go testing. The supplied AA batteries provide life for more than 800 measurements, and its backlit LCD display can provide readings from any angle, day or night. Everything you need for testing comes neatly stored in the provided durable carrying-case for added convenience.


What’s Included?
1x HI97115 Photometer
1x HI780-25 Marine pH reagent (30mL)
1x HI772-26 Marine Alkalinity reagent (30mL)
1x HI7581U Marine Calcium reagent A (30mL)
1x HI7582 Marine Calcium reagent B starter kit (reagent for 25 tests)
1x HI782-25 Marine Nitrate High Range starter kit (reagent for 25 tests)
1x HI764-25 Marine Nitrite Ultra Low Range starter kit (reagent for 25 tests)
1x HI774-25 Marine Phosphate Ultra Low Range starter kit (reagent for 25 tests)
2x Sample cuvettes and caps
2x 1mL Graduated syringes with tips
1x Mini Pipette with tip
2x 3mL Pasteur pipettes
3x 1.5V AA alkaline batteries
1x Cleaning cloth for wiping cuvettes
1x Scissors
1x Instrument quality certificate
1x Instruction manual
1x Hard carrying case

For Full Specifications, check out the product Spec Sheet.
More Information
Manuals Product Manual
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Product Questions

Are there extra cuvettes for sale to match this device? The cuvettes for the standalone checkers do not fit.
Question by: Sam Laakso on Mar 18, 2024, 6:48 PM
Hanna Instruments does offer replacement cuvettes on their website.
Answer by: JJ K (BRS Staff) on Apr 12, 2024, 9:14 AM
Is this different than the HI97115uc kit? Does it test magnesium? Says it tests 9 parameters but description only lists 7
Question by: Jeffrey Gillis on Dec 19, 2023, 9:55 PM
Hey there,
Thank you for reaching out to us. No, it is not any different and yes, it test Mg.

Please let me know if you need anything further and take care!
Answer by: Matt Lucero (BRS Staff) on Feb 15, 2024, 9:57 AM
I am thinking of ordering this next week . Are there any videos you have made about it ? Also is there any other products one needs in order to use this
Question by: Rodney Hantz on Dec 4, 2023, 1:45 PM
Hi there! This is a complete kit and I will attach the video we made featuring the Multiparameter!
Answer by: Grace Knowles (BRS Staff) on Jan 24, 2024, 10:55 AM
Does this meter check for magnesium? I see in some places it says it does but then I check other sources and it says different.
Question by: Joaquin Perez on Nov 25, 2023, 8:43 PM
Hey there, thanks for the question. Yes, you will be able to check for magnesium!
Answer by: Grace (BRS Staff) on Jan 26, 2024, 9:52 AM
Does this test magnesium as well?
Question by: Jason Sitarski on Nov 21, 2023, 7:46 AM
This does test Magnesium as well. It comes with HI783-25 marine magnesium reagent - 25 tests.
Answer by: JJ K (BRS Staff) on Jan 19, 2024, 8:41 AM