Description

Nickel is commonly utilized by the electroplating industry in processes utilizing stainless steel, cobalt, or nickel alloys. By using nickel in certain alloys, manufacturers can achieve a product that is highly resistant to chemical stress and exhibits a longer lifespan. Nickel is also an essential trace element that is essential for biological processes in livestock health and production. Nickel is also used in batteries, fuel cells, and hydrogenation of vegetable oils in the food industry.

The HI97740 uses an adaptation of the 1-(2-pyridylazo)-2-naphthol PAN method to measure nickel concentrations of less than 1.000 mg/L (ppm). When the reagent is added to samples containing small amounts of nickel, the sample will turn an orange hue; the greater the concentration, the deeper the color. The associated color change is then colorimetrically analyzed according to the Beer-Lambert Law. This principle states that light is absorbed by a complementary color, and the emitted radiation is dependent upon concentration. For nickel determination, a narrow band interference filter at 575 nm allows only yellow light to be detected by the silicon photodetector and omits all other visible light emitted from the tungsten lamp. As the change in color of the reacted sample increases, absorbance of the specific wavelength of light also increases, while transmittance decreases. Using a pre-programmed curve a result is then displayed.

The HI97740 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 LCD 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.

HI97740 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 comfortably in the hand for use in the field or on a table for benchtop use. The LCD is backlit for easy viewing under all conditions.

• LED that generates very little heat
• 8 nm narrowband interference filter that is accurate to ±1 nm.
• Reference detector that modulates the voltage to LED for consistent light output.
• A concave focusing lens that reduces errors from imperfections in the cuvette.

On-Screen Features

CAL Check
Advanced features including CAL-Check to verify performance and if necessary, recalibrate.

Setup Options
Setup options for meter personalization include date and time format, language, and enabling the tutorial mode.

Backlit Display
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.