Hach Lange DR 3900 User Manual page 47

3. Press Filter: On/Off.
4. Activate On.
5. Select a required parameter.
6. Press OK to confirm the selection.
The chosen items are listed.
7. Press Options>Control Chart.
8. Press Standard Control Chart to choose the control chart
of the selected standard.
The measured standard concentrations are displayed
graphically with the control limits and date.
Standard programs
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