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3.2 Select a Method
Move the icon focus to the method icon COLOR using the navigational (left, right, up, or down) keys. Press
OK on the icon to launch the first method selection page. The methods shown on the top row of the page
are the most frequently selected methods.
Figure 5. Method Selection
The followings are the operations associated with this page:
1. Use the navigational keys and the OK key to select and launch a method.
2. Long press the OK key to return to the main page. Press the arrow icon at the lower right corner of
the page to display the second method selection page if the device is loaded with more than 23
methods.
Note: Methods shown in the method selection pages include Hach© equivalent methods and Pyxis specific
advanced methods. The table in Appendix A provides a brief description of Pyxis method names and their
corresponding Hach® program number. Hach® reagents for 10 ml sample can be used for the test.
3.3 Single Timing Step Method
Most of colorimetric methods have only one timing step. As an example, in the DPD free chlorine method,
it takes one minute for the DPD powder reagent to completely react with chlorine in the water sample. The
DPD free chlorine method has a single one-minute timing step. Figure 7 shows the main page of a method
with a single timing step.
Figure 6. Single Timer Method
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