Hanna Instruments HI-733 Ammonia High Range Checker®HC Colorimeter (0.0 to 99.9 ppm)

The Hanna Instruments HI-733 is a simple, accurate and cost-effective handheld colorimeter for measuring high ranges of ammonia in fresh water across a range of 0.0 to 99.9 ppm. Designed as a more accurate alternative to chemical test kits, the HI-733 delivers quick, reliable results in four easy steps and is dedicated to a single parameter for straightforward operation. Its palm-sized design makes it ideal for use in the field, laboratory or at the aquarium.

The HI-733 uses an adaptation of the ASTM Manual of Water and Environmental Technology D1426-92, Nessler Method. The reaction between ammonia and reagents produces a yellow tint in the sample which the Checker®HC measures and displays as a digital ppm value. The unit is supplied with two cuvettes and caps, a 10-test ammonia HR reagent starter kit, syringe with tip, plastic pipette, battery, instruction manual and quick start guide. Additional reagents (HI-733-25, 25 tests) and the calibration check set (HI-733-11) are available separately. Please download and read the relevant Safety Data Sheet before handling reagents.

Key Features

• Ammonia measurement range 0.0 to 99.9 ppm in fresh water
• Accuracy ±1.0 ppm ±5% of reading
• More accurate than chemical test kits — four simple steps to a result
• Dedicated single parameter instrument for ease of use
• Palm-sized design — ideal for field, laboratory and aquarium use
• Built-in timer for timed reaction readings
• Auto power off after 10 minutes of inactivity
• Single AAA battery powered
• Supplied with 10-test reagent starter kit

Typical Applications

• Freshwater aquariums
• Water quality monitoring
• Wastewater testing
• Environmental monitoring
• Education