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Hanna Instruments

Hanna Marine Ammonia Checker HI784

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$67.50 Why this price?
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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Saturday, May 9
Order within 10 hours and 34 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 Hanna Instruments Marine Ammonia Checker HC (HI784) is designed to accurately and quickly determine the ammonia level in marine (saltwater) samples. The digital readout makes measurements effortless.FEATURES Simple and accurate digital test for small, trace amounts of ammoniaEasier to use and more accurate than chemical test kitsDedicated to a single parameterRange: 0.00 to 2.50 ppm (mg/L) NH3Built-in timer so you don't miss a stepIdeal for: Saltwater Aquariums, Marine, and Aquaculture Applications

Brand: Hanna Instruments


Liquid Volume: 0.7 Milliliters


Item Weight: 1.1 Pounds


Item Form: Liquid


Unit Count: 1.00 Count


Package Dimensions ‏ : ‎ 9.25 x 6.5 x 2.68 inches; 1.08 Pounds


Item model number ‏ : ‎ HI784


Batteries ‏ : ‎ 1 AAA batteries required. (included)


Date First Available ‏ : ‎ June 14, 2022


Manufacturer ‏ : ‎ Hanna Instruments


Best Sellers Rank: #38,540 in Pet Supplies (See Top 100 in Pet Supplies) #59 in Aquarium Test Kits


#59 in Aquarium Test Kits:


Customer Reviews: 4.2 4.2 out of 5 stars (137)


Brand Name: Hanna Instruments


Manufacturer: Hanna Instruments


Model Number: HI784


Manufacturer Part Number: HI784


Unit Count: 1.00 Count


Liquid Volume: 0.7 Milliliters


Item Weight: 1.1 Pounds


Item Form: Liquid


Pet Type: Fish


Target Species: Fish


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, May 9

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

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Similar Products

Top Amazon Reviews

    • Great product and easy to use
Very easy to use and clear instructions. So much easier to use than the drops Good quality
Reviewed in the United States on September 7, 2025 by Kindle Customer
    • Works great
Works great. A little hard to do at first but it gets easier.
Reviewed in the United States on January 8, 2026 by Amazon Customer
    • Hanna Marine Ammonia Checker HI784: Accurate and Easy Ammonia Monitoring
This Hanna Marine Ammonia Checker HI784 is a fantastic tool for maintaining a healthy marine aquarium. It's incredibly easy to use, providing accurate and reliable ammonia readings in seconds. Monitoring ammonia levels is crucial for fish health, and this checker makes it simple to keep a close eye on water quality. Highly recommended for any serious saltwater aquarist! ... show more
Reviewed in the United States on January 27, 2025 by Chad C.
    • Good checker
Great checker. Just wish the packets were easier to pour.
Reviewed in the United States on March 4, 2025 by David M.
    • Nope. Doesn't work as described.
I wouldn't buy this again. I use a couple of other Hanna readers. They are quirky, but I can get them to work. The ammonia checker has never worked for me. It has several steps involving drops & two different reagents. And, if something goes wrong, you have to use more drops/reagents, etc. They aren't cheap when you run out. Another problem is that the reader itself does not function as described. HANNA provides a work around but it would be better if they fixed their product. Stick with the API test tubes & color charts. ... show more
Reviewed in the United States on October 21, 2025 by Yimmom
    • Be Percise!
love this product!!! all i can say is read the instructions and follow them exactly to the second! the tests will fail without percision. Trust me, after the 15 minute result wait time, along with the pricy reagent packs, you want exactness.
Reviewed in the United States on April 15, 2025 by michael fayak
    • Económico y util
Lo mejor
Reviewed in the United States on October 4, 2025 by Hernan
    • Great Product
Love it's good giving a accurate number the no chart with it like my API kit but I just looked the reading was good for a new tank cycling is finished.
Reviewed in the United States on February 20, 2024 by M

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