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4. Press ESC to return in Setup menu.
6.7. ABSORBANCE MEASUREMENTS
Raw absorbance measurements may be performed on the HI83303 for personal or diagnostic
purposes. For example, you may monitor the stability of a reagent blank by occasionally measuring
its absorbance versus deionized water.
To measure the raw absorbance of a prepared sample:
1. Enable “Photometer Mode” if necessary by pressing the MODE key.
2. Press the METHOD key.
3. Highlight the appropriate Absorbance method (according to the wavelength to be used), then
press Select. Absorbance methods are located at the bottom of the method list.
4. Prepare the sample cuvette according to the method.
5. Insert a cuvette filled with deionized water, then press Zero.
6. Insert the prepared sample cuvette, then press Read.
WARNING: Never use Absorbance methods for validation using HANNA
®
CAL Check cuvettes. The
factory calibration corrections for CAL Check cuvettes are applied while in CAL Check mode only!
PHOTOMETER MODE
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