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Hanna Instruments

Hanna Marine Ammonia Checker HI784

Condition: New
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$71.98

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At a glance

Condition
New
Model
HI784
Weight
1.08 lb
Liquid Volume
0.7 Milliliters
Item Form
Liquid
Batteries
1 AAA batteries required. (included)
Pet Type
Fish

Features 4

  • 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

Specs 14

Brand Hanna Instruments
Liquid Volume 0.7 Milliliters
Item Weight 1.08 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)

Frequently asked questions

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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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  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
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  • Financing through Google Pay
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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