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Hanna Instruments

Hanna Instruments High Range Nitrate Checker HI782

  • Based on 537 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Jun 3
Order within 18 hours and 36 minutes
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Features

  • More accurate than chemical test kits, less expensive than professional testing
  • Single button operation for ease of use
  • Large LCD screen for readability
  • Auto shut-off to extend battery life

Description

The HI782 Marine Nitrate High Range Colorimeter is specifically designed to quickly and accurately determine high levels of nitrate for saltwater aquariums and marine applications. With a digital read out, there is no more struggling to determine colors visually.FEATURES Measurements with a range up to 75.0ppmLess complex laboratory grade accuracy - Requires only 1 reagentSimple, intuitive digital operationFor use with saltwater samples.More accurate than chemical test kits.Dedicated to a single parameter.Small size, big convenience.No errors with a digital readout.Ideal for aquariums and marine biology applications.

Package Dimensions ‏ : ‎ 7.52 x 4.96 x 2.64 inches; 0.01 ounces


Item model number ‏ : ‎ HI782


Batteries ‏ : ‎ 1 AAA batteries required. (included)


Date First Available ‏ : ‎ June 11, 2021


Manufacturer ‏ : ‎ Hanna Instruments


Best Sellers Rank: #20,562 in Pet Supplies (See Top 100 in Pet Supplies) #196 in Aquarium Water Treatments


#196 in Aquarium Water Treatments:


Customer Reviews: 4.5 4.5 out of 5 stars (693)


Item Weight: 0.01 ounces


Manufacturer: Hanna Instruments


Item model number: HI782


Batteries: 1 AAA batteries required. (included)


Date First Available: June 11, 2021


Item Package Dimensions L x W x H: 7.52 x 4.96 x 2.64 inches


Item Weight: 0.29 Grams


Brand Name: Hanna Instruments


Target Audience Keyword: Fish


Color: Purple


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jun 3

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Hanna Instruments High Range Nitrate Checker HI782
I recently purchased the Hanna Instruments High Range Nitrate Checker HI782, and it has exceeded all my expectations. This checker is an excellent tool for anyone needing precise nitrate measurements in their water systems. Outstanding Accuracy: The accuracy of the HI782 is remarkable. Every test I’ve conducted has provided consistent and precise results, which is crucial for maintaining the health of my aquatic environment. The high range capability ensures that I can accurately measure nitrate levels even in challenging conditions. User-Friendly Operation: The checker is incredibly easy to use. The interface is intuitive, and the step-by-step instructions make the testing process straightforward. I appreciate the clarity of the digital display, which makes reading and interpreting results simple and quick. Fast and Efficient Testing: I’m impressed by how fast the HI782 performs each test. The results are ready in just a few minutes, which is perfect for regular monitoring and ensuring water quality. This efficiency helps me stay on top of any potential issues before they become significant problems. Durable and Well-Made: The build quality of the checker is excellent. It feels sturdy and reliable, with a design that can handle regular use. The high-quality construction gives me confidence that this tool will last for a long time, making it a worthwhile investment. Value for Money: Considering its performance and reliability, the HI782 offers great value for money. It’s a professional-grade tool at a reasonable price, and the benefits it provides in terms of accurate and efficient nitrate testing are well worth the investment. Conclusion: The Hanna Instruments High Range Nitrate Checker HI782 is a superb tool for anyone needing precise nitrate measurements. It delivers exceptional accuracy, ease of use, and durability. If you’re looking for a reliable and efficient way to monitor nitrate levels, I highly recommend this checker. It has truly enhanced my ability to maintain optimal water conditions and deserves a 5-star rating! ... show more
Reviewed in the United States on August 14, 2024 by Seth Babinski
    • Quick and accurate saltwater aquarium water test
Works well and much more accurate than my color blind eye.
Reviewed in the United States on April 16, 2026 by BwB
    • Great product. Worth the money.
Great product and well worth the price. Easy to use.
Reviewed in the United States on February 13, 2026 by Max J
    • Good Nitrate Checker
Very easy and nice to have a digital read out as opposed to guessing colors. This is the fires time I feel that I have an accurate nitrate reading and a good gauge to go from here.
Reviewed in the United States on August 8, 2025 by Bonnie Boe
    • +/- 2ppm is a tolerance you can drive a truck through
Of all the Hanna Checkers, this is the only one I have worries about the accuracy. But probably works ok for coarse readings that a beginner would want, and is easier to use than the Low Range option. If you are like me, a new reefer, and don't want to read the color change on the standard kits, this will work. While the tolerance is pretty big, I am aiming for a 1-5ppm Nitrate in my tank, and I trust this to tell me I am at 0ppm, between 1-5ppm, or above 5ppm. So it will do the job, but I will probably move to another option as I become better at reefing and start aiming to keep my Nitrate closer to 1ppm. I tested 4 things first day I got it; My aquarium 3 times, and fresh made saltwater 1 time. My Aquarium was 3.8ppm, 4.9ppm, and 4.6 ppm. So the accuracy is probably better than the +/-2ppm claimed. Fresh saltwater was 0.0 ppm. Did not error out, gave a clean 0.0. 1 week later, I tested my aquarium again, only once, and got 3.9ppm. To be fair, I only have 3 small fishes in there right now, so there is not a huge bio load right now. Once I have more critters in there, this should start to detect the weekly increase, if not, at least monthly it will let me know if I am trending up or mostly stable. Also, this says to mix the reagent for 2min, then take measurement 7 min later. I tested this as well, after 2 min of mixing, I started a timer and checked the reading every minute for 10 minutes. I got 1min:2.4, 2min:2.7, 3min:3.1, 4min:3.3, 5min:3.5, 6min:3.6, 7min:3.9, 8min:3.7, 9min:3.9, 10min:3.9 So it seems stable after the 7 minutes, so error is probably more to do with the reader itself, and if you spilled some reagent. Final Analysis: Good for beginner, probably want something more accurate long term. But this Checker is more accurate than the standard kits I would say, because it removes the human reading color element of the test. Using one of the standard color matching tests, I thought I was reading 10ppm, which seemed much higher than my 3 little fishes would make. This Checker seems to confirm that, and I trust it more than that other test. ... show more
Reviewed in the United States on March 26, 2022 by Shane Peterson
    • Accurate Nitrate Testing Made Easy
Fantastic tester for saltwater tanks! The HI782 makes nitrate testing so much easier and more accurate. No more struggling with color charts or second-guessing results. The digital reading is clear and reliable. It is perfect for keeping my reef tank in check. Highly recommend for anyone wanting stress-free nitrate testing. ... show more
Reviewed in the United States on April 14, 2025 by RonT
    • Finally something accurate!
Easy to use and accurate.
Reviewed in the United States on September 24, 2025 by Christopher Rogoz
    • Hanna no' 1 in the world
The best chicken in the world
Reviewed in the United States on January 9, 2026 by Itzik B.

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