HI83399-11 is a set of high-quality calibration standards that allow users to validate absorbance measurements for the HI83399 Water and Wastewater Photometer. The HI83399-11 includes six sealed cuvettes, including one to zero the meter. The calibration set is produced using reagent grade chemicals in a temperature-controlled environment.

, which contains:

• Lot number
• Expiration date
• Standard value at 25℃
• Reference meter NIST traceable

Validation of the HI83399 Water and Wastewater Photometer is quick and easy with CAL Check Standards. The CAL Check screen guides the user through the measurement of each standard and applies the factory calibration corrections to each measurement. The HI83399 stores the results of the most recent CAL Check measurements which may be viewed on the CAL Check menu. Compare these results with the values printed on the Certificate provided with each HANNA® CAL CheckS tandards kit.

To perform a validation:

1. Press Setup button.
2. Highlight CAL Check, then press Select.
3. Follow the prompts on the screen. The meter will prompt to measure each cuvette provided in the HANNA® CAL Check Standards kit.

You are now ready to perform a measurement.