Nitrite Low Range Portable Photometer with CAL Check - Kit with Carrying Case and Secondary Standards

Nitrite Low Range Portable Photometer with CAL Check - Kit with Carrying Case and Secondary Standards

• Nitrite Low Range: 0 to 600 μg/L (as NO2-N)

The HI-97707 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-97707 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 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.

Advanced LED optical system

LEDs have a much higher luminous efficiency, providing more light while using less power. They also produce little heat which could otherwise affect electronic stability.

CAL Check

Validate the performance of the instrument at any time and apply a user calibration using CAL Check cuvettes made with NIST traceable standards.

The CAL Check screen guides the user step-by-step through the validation process and user calibration.

Auto logging

GLP

Review of the last calibration date.

On-screen tutorial mode with animations

The built in tutorial mode guides users step-by-step through the measurement process.

Waterproof and floating IP67 case

Auto-shut off

Automatic shut off after 15 minutes of inactivity and 30 minutes before a read measurement.

Battery status indicator

Indicates the amount of battery life left.

Built-in timer

Display of time remaining before a measurement is taken. Ensures that all readings are taken at the appropriate reaction intervals for the test being performed.

Error messages

Messages on display alerting to problems including no cap, high zero, and standard too low.

Units of measurement

Appropriate unit of measure is displayed along with reading.

About Nitrites

Nitrites can be harmful to aquatic organisms even in low concentrations and 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.

Nitrite Range	0 to 600 μg/L (as NO2-N)
Resolution	1 μg/L
Accuracy	±20 μg/L ±4% of reading at 25 °C
Method	Adaptation of an EPA approved diazotization Method

Photometer/Colorimeter Light Source	Light emitting diode
Photometer/Colorimeter Light Detector	Silicon photocell with narrow band interference filter @ 466 nm
Bandpass Filter Bandwidth	8 nm
Bandpass Filter Wavelength Accuracy	±1.0 nm
Cuvette Type	round, 24.6 mm diameter (22 mm inside)
GLP	Date, time of last calibration
Display	128 x 64 pixel B/W LCD with backlight
Logging Type	automatic logging
Logging Memory	50 measurement
Battery Type/Life	1.5V AA battery (3 pcs.) / > 800 measurements (without backlight)
Automatic Shut-Off	After 15 minutes of inactivity (30 minutes before a READ measurement)
Environment	0 to 50°C (32 to 122°F); relative humidity: 100% (IP 67, floating case)
Weight	380g with batteries
Dimensions	142.5 x 102.5 x 50.5 mm
Casing protection rating	IP67, floating case