The HI97733 Ammonia Photometer combines accuracy and ease of use in a simple, portable design. The advanced optical system provides lab-quality accuracy while its user-friendly design is easy for any user making it the perfect photometer for your water quality testing needs. The HI97733 measures ammonia in water samples from 0.0 to 100.0 mg/L (ppm).
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Ammonia is a common byproduct from the breakdown of proteins and is excreted by animals as ammonia, urea or uric acid. Ammonia is also a commonly found in fertilizer and used as a nitrogen source for plant growth. It is effective in cleaning chemical and can be found in glass and floor cleaners. Ammonia exists in two forms. One is the ionized form ammonium (NH4+) and the other is the gaseous form ammonia (NH3). The relationship in which form is present is based on the pH of the solution with ammonium becoming more predominate at pH’s less than 8. Since most naturally occurring water is pH 8 or less, ammonium is the most common form present. For aquatic life, as the pH increases this can be lethal as the ammonium is converted to ammonia, which is more toxic since it can diffuse back into the animal. In surface and groundwater, unless there is some contamination, the concentration is very low. In drinking water, it is common to add ammonia to water at concentrations less than 0.4 mg/L to extend the effectiveness of chlorine as a disinfecting agent. Using the Nessler method, the HI97733 is designed to measure ammonia in the high range at levels from 0.0 to 100.0 mg/L as NH4+. The results can be displayed as ammonia or ammonia nitrogen as well.
The HI97733 has an innovative optical system that offers superior performance in accuracy, repeatability, and the short amount of time it takes to perform a measurement. This compact, waterproof meter is extremely user friendly with a tutorial mode that walks the user graphically, step by step, in performing a measurement. The use of a backlit dot matrix LED allows the use of virtual keys which makes the operation of the meter very intuitive including selecting different units of measure, reviewing GLP data, recalling the last 50 measurements, and customizing the meter to user preferences.
HI97733 is completely waterproof including the cuvette holder that is designed with ridges to protect the optical path from getting scratched by the cuvette and a gasketed battery compartment that holds three common AA batteries. The compact design fits comfortable in the hand for use in the field or on a table for benchtop use. The LCD is 71 mm (2.75″) by 37 mm (1.6″) and is backlit for easy viewing under all conditions.
CAL Check
Advanced features including CAL-Check to verify performance and if necessary, recalibrate.
Setup Options
Backlit dot matrix LCD that offers an exceptionally intuitive user interface that is easy to read and understand.
Tutorial Mode
Tutorial mode for step-by-step instructions to guide a first-time user in how to perform a measurement correctly.
Reaction Timer
Built-in reaction timer that ensures consistency amongst multiple users.
Stable Light Source:
High Efficiency Light Source:
High Quality Filters:
Greater Light Yield:
CAL Check Functionality:
Large Cuvette Size:
Intuitive Dot Matrix Display:
Auto-off Protection:
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