Will this work on well water?

It will work on any type of water. Well, city, salt. If it has nitrates in it this checker will see them. Only complaint is it doesn’t come with a lot of reagent packs and they are hard to come by currently. But it is absolutely a great investment for accuracy and peace of mind.

Can I add some marine salt to my freshwater sample to make this work for freshwater?

Go on to Reef2reef discussion boards and direct your question to Randy Holmes Farley he's the chemist. He usually gets back to you fairly quickly. My honest answer though, you'd be better off with Tetra strips. They're plenty accurate enough for fresh water applications and cheap enough.

Hanna Instruments ハイレンジ硝酸チェッカー Hi782

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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25776 kr

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Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌊 Master your marine world with precision and ease!

COMPACT PORTABLE - Sleek design fits perfectly at home, work, or on the go—never miss a test.
PRECISION THAT MATTERS - Measures nitrates up to 75.0 ppm for ultimate control over marine water quality.
TRUSTED BY PROS HOBBYISTS - Highly rated for accuracy and ease, making it the go-to nitrate checker for marine enthusiasts.
EFFORTLESS DIGITAL OPERATION - Clear digital display eliminates guesswork and color interpretation errors.
LAB GRADE ACCURACY SIMPLIFIED - Achieve complex, reliable results using just one reagent—no lab degree required.

The Hanna Instruments HI782 is a compact, digital nitrate checker designed for saltwater and marine applications. It measures nitrate levels up to 75.0 ppm with lab-grade accuracy using a single reagent, delivering fast, reliable results via an intuitive digital readout. Ideal for aquarium professionals and enthusiasts seeking precise water quality monitoring anytime, anywhere.

Specifications

ASIN	B098H54LH5
Amazon Bestseller	#194,499 in Pet Supplies ( See Top 100 in Pet Supplies ) #2,469 in Aquarium Water Quality Testing & Treatment
Batteries	1 AAA batteries required. (included)
Batteries Included	Yes
Customer Reviews	4.6 4.6 out of 5 stars (657)
Date First Available	October 25, 2022
Item model number	HI782
Number of items	1
batteries required	No

Reviews

W**N

Optimal

11.03.2025

C**T

Works great! accurate and reliable as always with Hanna. Great battery life and compact case, easy to follow instructions.

11.06.2025

M**C

Excellent! Bye Salifert :)

24.01.2026

A**R

Makes measuring Nitrate ease and accurate.. so don’t need to rely upon comparing colour chart and making judgement about the reading… thanks marine addict

9.09.2023

I**N

Item well received as always. trusted packaging from Amazon!

23.01.2024

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