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PHOTOMETER MODE
6.5. CHEMICAL FORMULA / UNIT CONVERSION
Chemical formula/unit conversion factors are pre‑programmed into the instrument and are method
specific. In order to view the displayed result in the desired chemical formula press keys to
access the second level function and then press the Chem Frm key to toggle between the available
chemical formulas for the selected method.
6.6. METER VALIDATION / CAL CHECK
WARNING: Do not validate the meter with standard solutions other than the HANNA
®
CAL Check
Standards. For accurate validation results, please perform tests at room temperature (18 to 25 °C;
64.5 to 77.0 °F).
Validation of the HI83303 involves absorbance measurements of certified HANNA
®
CAL Check
Standards (see “Accessories”). The “CAL Check” screen guides the user through the measurement of
each CAL Check Standard and applies the factory calibration corrections to each measurement. The
HI83303 stores the results of the most recent CAL Check measurements which may be viewed on
the “CAL Check” screen. Compare these results with the values printed on the Certificate provided
with each HANNA
®
CAL Check Standards 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. To abort the process at any time, press ESC
button.
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