Using A Reverse Color Method - Thermo Scientific Orion AquaMate 8000 UV-Vis User Manual

Using a Reverse Color Method

Thermo Scientific
16. To save the adjustment correction factor to the test method, press the Save Test function
key and overwrite the existing test method or save as a new test method.
17. Press the Run Test function key.
When running a test with an adjustment correction factor in use, the display will show
(1pt Adj) next to the test name.
Reverse color methods are recognizable as those which have a negative factor (i.e., the slope of
the calibration curve is negative). For these methods, the chemistry used to make the
measurement causes a dark color (high absorbance) for very low concentrations of analyte,
and an increasingly lighter color (lower absorbance) as the concentration of the analyte
increases. Chemical Oxygen Demand (COD) is an example of a test that is often run using a
reverse color chemistry.
Orion AquaMate 7000 Vis and Orion AquaMate 8000 UV-Vis
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Water Analysis Application
Using a Reverse Color Method
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