---
product_id: 364454463
title: "Hanna Instruments HI 782 25 Marine Nitrate High Range Checker Reagents (25 Tests)"
brand: "hanna instruments"
price: "€ 68.61"
currency: EUR
in_stock: true
reviews_count: 11
category: "Hanna Instruments"
url: https://www.desertcart.hr/products/364454463-hanna-instruments-hi-782-25-marine-nitrate-high-range-checker
store_origin: HR
region: Croatia
---

# Designed for saltwater nitrate range 0-75 ppm Expiration date & lot number traceability 25 pre-measured reagent tests Hanna Instruments HI 782 25 Marine Nitrate High Range Checker Reagents (25 Tests)

**Brand:** hanna instruments
**Price:** € 68.61
**Availability:** ✅ In Stock

## Summary

> ⚡ Stay ahead of your marine nitrate game with precision-packed reagents!

## Quick Answers

- **What is this?** Hanna Instruments HI 782 25 Marine Nitrate High Range Checker Reagents (25 Tests) by hanna instruments
- **How much does it cost?** € 68.61 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/364454463-hanna-instruments-hi-782-25-marine-nitrate-high-range-checker)

## Best For

- hanna instruments enthusiasts

## Why This Product

- Trusted hanna instruments brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Marine-Grade Accuracy:** Specifically formulated for saltwater samples, covering a high nitrate range up to 75 ppm.
- • **Precision in Every Packet:** Pre-measured reagents ensure fast, accurate nitrate readings with zero guesswork.
- • **Traceability You Can Trust:** Each reagent batch is marked with expiration and lot numbers for quality assurance.
- • **Effortless Testing Workflow:** Simply add the reagent packet to your sample and get instant colorimetric results with the HI 782 Checker.
- • **Trusted by Aquarists Worldwide:** Consistently reliable and well-packaged reagents that elevate your marine water testing game.

## Overview

The Hanna Instruments HI 782-25 Marine Nitrate High Range Checker Reagents offer 25 pre-measured tests designed for saltwater nitrate levels from 0 to 75 ppm. Using the Zinc reduction method, these high-purity reagents deliver fast, accurate colorimetric results when paired with the HI 782 Checker. Each packet is traceable with expiration and lot numbers, ensuring consistent quality for professional-grade marine water analysis.

## Description

Product description The HI782-25 are high-quality reagents that are pre-measured, allowing for users to achieve fast and accurate measurements with their Marine Nitrate High Range Checker HC. These reagents follow the Zinc reduction method in which the reaction between nitrate and the reagent causes a pink tint in the sample. By simply adding the packet of HI782-25 reagent to the sample, the reaction will take place and the HI782 will determine the concentration from the color that is produced. The results will be displayed in ppm of nitrate (as NO3–). These reagents are designed to be used with saltwater samples that have an expected range of 0.0 to 75.0 ppm.FEATURESPre-made reagents for ease of usePrepared with high purity chemicalsMarked with expiration date and lot number for traceability Directions Simply add the HI782-25 reagent package to the sample, the reaction will occur, and the HI782 will determine the concentration of the color that is produced.

Review: Consistent and Well Packaged - These reagents do what they’re meant to do. They’re simple to use with the HI 782 checker and the readings have been consistent and accurate for me. The packets are well sealed and easy to open. You only get 25 tests, so last well for what you pay, so they’re not the cheapest per test, but Hannah reliability isn’t questionable.
Review: Good - Expensive but they are one of the best reagents out there Hanna testers are very good and used by many aquarists.

## Features

- Causes serious eye damage.
- Harmful to aquatic life with long lasting effects.
- Pre-made reagents for ease of use
- Prepared with high purity chemicals
- Marked with expiration date and lot number for traceability

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B098V2XKP6 |
| Batteries Included | No |
| Batteries required | No |
| Best Sellers Rank | 15,698 in Pet Supplies ( See Top 100 in Pet Supplies ) 29 in Aquarium Test Kits |
| Colour | White |
| Customer Reviews | 4.7 4.7 out of 5 stars (527) |
| Date First Available | 7 July 2021 |
| Item Form | Powder, Tablets |
| Item Weight | 32 g |
| Item model number | HI782-25 |
| Number of Items | 1 |
| Product Dimensions | 5.89 x 5.79 x 4.19 cm; 32 g |
| Quantity | 1 |

## Product Details

- **Brand:** Hanna Instruments
- **Global Trade Identification Number:** 00198715292268
- **Item form:** Powder, Tablets
- **Manufacturer:** Hanna Instruments

## Images

![Hanna Instruments HI 782 25 Marine Nitrate High Range Checker Reagents (25 Tests) - Image 1](https://m.media-amazon.com/images/I/512l5veYmYL.jpg)

## Questions & Answers

**Q: I ordered this and the regent powder is clumpy. Has anyone run into this problem? I'm concerned the test reading can be inaccurate because of this.**
A: My recent order was also clumpy and brownish in color.  My reading does not appear accurate.  Has anyone else verified?

**Q: Does this include the liquid h1781a-0?**
A: Don’t think so

## Customer Reviews

### ⭐⭐⭐⭐⭐ Consistent and Well Packaged
*by P***A on 8 February 2026*

These reagents do what they’re meant to do. They’re simple to use with the HI 782 checker and the readings have been consistent and accurate for me. The packets are well sealed and easy to open. You only get 25 tests, so last well for what you pay, so they’re not the cheapest per test, but Hannah reliability isn’t questionable.

### ⭐⭐⭐⭐⭐ Good
*by T***Y on 3 February 2026*

Expensive but they are one of the best reagents out there Hanna testers are very good and used by many aquarists.

### ⭐⭐⭐⭐⭐ Great
*by O***K on 4 January 2026*

Good quality

## Frequently Bought Together

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-27*