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 High Range Nitrate Checker Hi 782

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Description

📈 Elevate your marine monitoring game—accuracy meets simplicity!

TRUSTED BY EXPERTS - Highly rated with 4.6 stars from 663 users—join the community of pros who rely on HI782.
COMPACT MARINE READY - Designed specifically for saltwater aquariums and marine biology applications.
EFFORTLESS DIGITAL OPERATION - Intuitive interface eliminates guesswork and color matching errors.
PRECISION AT YOUR FINGERTIPS - Measure nitrate levels up to 75.0ppm with unmatched accuracy.
SIMPLIFIED LAB GRADE TESTING - Achieve professional results using just one reagent—no complex prep needed.

The Hanna Instruments HI782 is a compact, digital nitrate checker designed for saltwater environments, delivering lab-grade accuracy up to 75.0ppm with just one reagent. Its intuitive digital readout removes color matching errors, making it ideal for marine biologists and aquarium professionals seeking fast, reliable nitrate measurements.

Specifications

ASIN	B098H54LH5
Batteries	1 AAA batteries required. (included)
Batteries Included	Yes
Color	Lavender
Customer Reviews	4.6 4.6 out of 5 stars (663)
Date First Available	5 July 2021
Item Weight	0.29 g
Item model number	HI782
Number of Items	1
Package Dimensions	19.41 x 12.5 x 6.81 cm; 0.29 g
Quantity	1
batteries required	No

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