HI97707 is an advanced, low range, portable photometer for measuring nitrite in water. This meter offers a superior optical system using a reference detector and narrow band interference filters for extremely fast and repeatable measurements.

• No warm-up time before taking a measurement.
• Tutorial mode for step-by-step instructions.
• Display results in nitrite (as NO2—N).

Better features for better testing

Let your photometer guide you through setup, calibration, and testing with on-screen tutorials and animations so you always know what to do next. Access Tutorial Mode at any point in the setup or measurement process with the dedicated help button.

The auto power-off feature extends battery life for peace of mind and energy savings if the meter is accidentally left on.

When the battery level is below 10%, a warning symbol will flash to indicate that the battery is low. When low battery may affect your results, the meter will turn off to prevent incorrect readings caused by low battery.

Data logging

Missed a measurement? Don't worry, because your photometer automatically records the last 50 measurements. The results can be viewed immediately using the Log Recall Menu.

CAL CheckTM Validation

Hanna's exclusive CAL CheckTM feature provides a stress-free, easy way to ensure your photometer is working properly. Simply enter the certified CAL CheckTM standards and let your meter guide you through the validation. If for any reason your photometer If it also does not meet specifications, simply calibrate it to your standard.