


Hanna Instruments HI-782 Nitrate High Range Checker for Marine
HI-782 Nitrate High Range Checker for Marine
The HI-782 Marine Nitrate Checker provides an accurate, practical solution for the measurement of nitrate in saltwater tanks. A high range digital nitrite tester allows you to measure and quickly respond to any change in nitrite levels in marine aquariums, with clear on-screen information to take action and reduce nitrates in your aquarium quickly, preventing old tank syndrome.
The Hanna Nitrate HR Checker is part of our Checkers range for digital water quality measurement in aquariums.
Nitrate Range | 0.0 to 75.0 ppm (as NO3–) | |
Nitrate Resolution | 0.1 ppm | |
Nitrate Accuracy | ±2.0 ppm ±5% of reading | |
Nitrate Method | Zinc reduction method. The reaction between nitrate and the reagent causes a pink tint in the sample. This checker has been developed to work with seawater samples. | |
Photometer/Colorimeter Light Source | LED @ 525 nm | |
Photometer/Colorimeter Light Detector | silicon photocell | |
Battery Type/Life | 1.5V AAA ; Automatic Shut-Off after 10 minutes of non-use | |
Environment | 0 to 50°C (32 to 122°F); RH max 95% non-condensing | |
Weight | 64 g (2.3 oz.) | |
Dimensions | 86.0 mm x 61.0 mm x 37.5mm (3.2 x 2.4 x 1.5”) | |
Ordering Information: | HI-782 Checker HC is supplied with sample cuvettes with caps (2), marine nitrate starter kit (reagents for 10 tests), 3 mL Pasteur pipette (1), 1.5V AAA battery (1), and instruction manual. |

Frequently Asked Questions
Clear answers to help you choose the right water testing solution with confidence
Which brands of water testing kits do you supply?
Do you provide kits for both home and professional use?
Yes — whether you’re a pool or spa owner, aquarium keeper, utility company, or a university laboratory, we have the right solution for your needs.
Can I arrange servicing or calibration for my photometer?
Absolutely. We also provide servicing and calibration to keep your photometers accurate and reliable.
How quickly do you dispatch orders?
Orders placed before 2:30 pm (Monday–Friday) are dispatched the same day. We also ship on Saturdays for your convenience.
Which couriers do you use for delivery?
We deliver through UPS, DPD, and Royal Mail. You can also choose to upgrade to next-day delivery at checkout.
What is your return policy?
We accept returns within 14 days of delivery provided the items are unused, in their original packaging, and in resalable condition. Please contact our team before returning any items.
Can I place bulk or business orders?
Yes, we welcome bulk, trade, and institutional orders. For tailored pricing or large quantities, please get in touch with us directly.
How can I get help if I’m unsure which kit to buy?
You can call us at 📞 +44 (0)115888 2726 and our team will guide you in choosing the most suitable kit for your needs.