Hanna HI707 Nitrite LR Checker

Hanna HI707 Nitrite LR Checker

The Hanna HI707 Nitrite LR Checker is a practical, pocket-sized digital colorimeter designed for accurate and reliable nitrite testing in both marine and freshwater aquariums. With a measurement range from 0 to 600 ppb of NO₂-N, this handheld device provides precise, on-the-spot analysis far more accurately than visual colorimetric test kits.

Using a 10 mL water sample and a specialized reagent, the HI707 measures nitrite concentration through a modified EPA diazotisation method, displaying digital results on an easy-to-read LCD screen. Ideal for aquarists, aquarium professionals, and researchers, the HI707 enables effective monitoring of nitrite toxicity to maintain aquatic health and water quality.

Features

• Low Range Nitrite Measurement (0 to 600 ppb NO₂-N)
  Designed specifically for detecting low concentrations of nitrite in aquariums where accurate control is essential.

• High Accuracy and Resolution
  Provides precise results with a resolution of 1 ppb and accuracy of ±20 ppb ±5% of the reading at 25°C.

• Compact and Portable Design
  Fits comfortably in your hand or pocket—ideal for home or professional aquarium maintenance.

• Simple One-Button Operation
  Easily performs tests in four steps; no need for complex calibration or interpretation.

• EPA-Adapted Method
  Based on the EPA Diazotisation method 354.1, ensuring dependable and reproducible results.

• Auto Power-Off
  Shuts down after 10 minutes of inactivity to conserve battery life.

• Includes Starter Reagents
  Comes with six powder reagent packets, cuvettes, battery, and instructions—ready to use out of the box.

Applications

The HI707 Nitrite Checker is ideal for a wide range of nitrite monitoring needs in aquatic systems:

• Marine Aquariums
  Detects toxic nitrite spikes to protect sensitive marine species.

• Freshwater Aquariums
  Ensures water safety for fish and plants, particularly in newly established or cycled tanks.

• Aquaculture and Hatcheries
  Supports water quality management for healthy fish growth and breeding conditions.

• Research and Education
  Offers reliable and easy nitrite testing in laboratory and classroom environments.

• Water Treatment and Environmental Monitoring
  Useful for low-range nitrite assessments in controlled water systems or field studies.

Specifications

• Model: HI707

• Measurement Range: 0 to 600 ppb NO₂-N

• Resolution: 1 ppb

• Accuracy @ 25°C: ±20 ppb ±5% of reading

• Method: Adaptation of EPA Diazotisation Method 354.1

• Light Source: LED @ 470 nm

• Light Detector: Silicon photocell

• Operating Environment: 0 to 50°C; up to 95% RH (non-condensing)

• Battery Type: One 1.5V AAA

• Auto-Off: After 10 minutes of non-use

• Dimensions: 81.5 × 61 × 37.5 mm

• Weight: 64 g

• Included in Package:

  • HI707 Checker HC

  • (2) Sample cuvettes with caps

  • Nitrite LR reagent starter kit (6 tests)

  • (1) AAA battery

  • Instruction manual and quick start guide