Range
0.00 to 0.90 ppm
Suitable for SPS and mixed reefs.
In the box
Included with the Checker.
Meter
2 cuvettes
6 reagent sachets
Battery
Instructions
Technical specifications
HI774 at a glance.
The key features summarised in brief.
Measuring range0.00–0.90 ppm PO4per Hanna
Resolution0.01 ppmdigital display
Accuracy±0.02 ppm ±5% of readingper Hanna
Methodascorbic acid methodcolorimetric
Starter reagents6 powder sachetsincluded
RefillHI774-2525 tests
Hanna Instruments
Measurement and analysis technology.
Digital display
No colour matching by eye.
Reagent included
Tropic Marin PO4 Professional included.
Advice
We help you choose.
At a glance
What does the Hanna HI774D measure?
The Hanna Checker HC HI774D is a digital photometer for phosphate in saltwater in the ultra-low range of 0.00 to 0.90 ppm. According to Hanna, it resolves to 0.01 ppm, making it suitable for low-nutrient reef tanks. Hanna supplies the HI774D version without reagents.
Instead of the Hanna reagents, we include the Tropic Marin PO4 Professional refill. You measure with the HI774D using this reagent. You can buy more from us separately.
Reagent
Tropic Marin PO4 Pro
Refill included.
Meter
HI774D
Hanna Checker HC without Hanna reagents.
FAQ
Questions about the Hanna HI774D.
What phosphate level makes sense in a reef aquarium?
Many reefers keep phosphate between about 0.02 and 0.10 ppm. More important than a fixed value is that it stays stable and doesn't drop to zero permanently.
How is it different from the HI774?
It is the same phosphate Checker. The HI774D just comes without the Hanna powder reagents. Instead, we include the Tropic Marin PO4 Professional refill.
HI774D or HI736 – what's the difference?
The HI774D shows phosphate in ppm, the HI736 phosphorus in ppb. 1 ppb phosphorus corresponds to around 3 ppb phosphate. The HI736 offers finer resolution at very low levels.
Where do I get new reagent?
We also sell the Tropic Marin PO4 Professional refill separately.
Premium Reefing advice
Questions about Hanna Checker HC HI774D?
Just tell us your tank volume and your livestock – we'll be glad to help you choose the right product and use it correctly.
Request adviceProduct safety and manufacturer information
Manufacturer
Hanna Instruments Deutschland GmbH, An der Alten Ziegelei 7, 89269 Vöhringen, Deutschland, info@hannainst.de
Product identifier
Hanna Checker HC HI774D, SKU HI774D
Safety information
Meter: Contains batteries. Keep batteries out of the reach of children and dispose of used batteries at collection points, not with household waste.
Do not immerse the meter in water and protect it from moisture. Wipe the outside of cuvettes dry before inserting.
Follow the operating instructions.
Reagents:
No classification publicly documented.
Keep reagents out of the reach of children.
Do not swallow. Avoid contact with eyes and skin; wash hands after use.
Use only for water analysis; do not add to the aquarium.
Safety data sheet available on request.
Frequently bought together
What reef keepers buy with it.
Consumables, matching tests and accessories that go with this product. Deselect anything you already have.
€109,99
€25,99
€120,99
€35,99
Total price for items
You can choose the size or version directly on each item.