HI-97708 Portable Photometer for Nitrite - High Range

• Sophisticated optical system
• Meter validation using certified CAL Check cuvettes
• Tutorial mode guides the user step-by-step
• Auto logging
• Waterproof IP67, floating case
• GLP features

About the HI-97708 photometer

HI-97708 is an advanced portable photometer for the measurement of High Range Nitrite in water. This meter offers a superior optical system that utilises a reference detector and narrow band interference filters for extremely fast and repeatable measurements.

• High Range Nitrite - 0 to 150 mg/L (as NO2-)
• No warm up time before taking a measurement
• Tutorial mode for step-by-step instructions
• Displays results in multiple chemical forms

The HI-97708 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 methods, reviewing GLP data, recalling the last 50 measurements, and customising the meter to user preferences.

HI-97708 is waterproof including the cuvette holder that is designed with ridges to protect the optical path from getting scratched by the cuvette and a protected battery compartment that holds three AA batteries. The compact design fits comfortably 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.

Each HI-97708 is delivered in a cardboard box and is supplied with:

• Sample cuvette (2 pcs.)
• Sample cuvette cap (2 pcs.)
• Plastic stopper (2 pcs.)
• 1.5V AA Alkaline batteries
• Instrument quality certificate
• Instruction manual

Reagent sets to buy separately

• HI-93708-01 Nitrite HR Reagent - 100 tests
• HI-93708-03 Nitrite HR Reagent - 300 tests

Advanced optical system

• LED that generates very little heat.
• 8 nm narrowband interference filter that is accurate to +/- 1 nm and offers 25% increase in light efficiency.
• Reference detector that modulates the voltage to LED for consistent light output.
• A concave focusing lens that reduces errors from imperfections in the cuvette.

About Nitrites

Nitrites can be harmful to aquatic organisms even in low concentrations. For this reason, they are closely monitored in aquaculture facilities. In cooling towers, however, an adequate amount of nitrites is necessary to prevent corrosion. In high concentrations, they can be harmful to the environment and to humans. They are, therefore, normally monitored to verify the quality of water for domestic use, as well as lakes and ponds.

Nitrites are an intermediate product in the nitrogen cycle and are produced by ammonia oxidation with water, or even originate in industrial waste directly. They must not be present in drinking water.