Hanna HI733 Ammonia High Range Checker

Hanna HI733 Ammonia High Range Checker HC

The Hanna HI733 Ammonia High Range Checker HC is a practical, handheld colorimeter specifically designed for accurately measuring high levels of ammonia in freshwater environments. Ideal for aquarium hobbyists, aquaculture professionals, and water quality testers, this device offers a simple, reliable, and affordable alternative to conventional chemical test kits. With its digital display, streamlined four-step procedure, and portable form factor, the HI733 ensures consistent results and ease of use in both laboratory and field applications.

Using an adaptation of the ASTM D1426-92 Nessler Method, the HI733 detects ammonia levels based on a yellow tint that forms during the chemical reaction. This provides a clear and quantifiable result, removing guesswork and interpretation error often associated with traditional color comparison charts.

Key Features

• High Range Detection: Accurately measures ammonia from 0.0 to 99.9 ppm (as NH₄⁺), perfect for freshwater aquariums and aquaculture systems.

• Compact Design: Palm-sized for one-handed use and convenient transport to field testing locations.

• Easy Operation: Four-step testing process with a single-button interface makes the device extremely user-friendly.

• Reliable Results: Colorimetric detection method minimizes subjective errors and improves reproducibility of data.

• Auto Shut-Off: Conserves battery life by powering down automatically after 10 minutes of inactivity.

• Battery Operated: Runs on a single AAA battery—no external power required.

Applications

• Freshwater Aquarium Monitoring

• Aquaculture Water Management

• Educational Laboratories

• Water Treatment Plants

• Field Water Quality Assessments

• Environmental Testing Projects

Technical Specifications

• Measurement Range: 0.0 to 99.9 ppm as NH₄⁺ (ammonium)

• Resolution: 0.1 ppm

• Accuracy (@20°C/68°F): ±1.0 ppm ±5% of reading

• Measurement Method: Colorimetric (yellow tint formation)

• Light Source: LED @ 470 nm

• Light Detector: Silicon photocell

• Power Supply: (1) 1.5V AAA battery

• Auto-Off: After 10 minutes of inactivity

• Operating Environment: 0 to 50°C (32 to 122°F); max 95% RH non-condensing

• Dimensions: 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5 inches)

• Weight: 64 g (2.25 oz.)

• Method Used: Adaptation of ASTM D1426-92 Nessler Method