Hach-Lange DR 3900 User Manual - Manual (Page 51)

51
Standard programs
Use the Ratio function to monitor the parameter relationships at a
particular location and display them in a graph.
Use the Interference Check function to display analyses with the
same sample IDs and unfavourable levels of ion interference.
5.3.4.1 Trends
1. Press Recall Data>Data analysis.
2. Choose Trends and press OK to confirm.
Alternatively, choose Trends from the toolbar.
3. Press Options>New.
4. Select the required parameter and press Next to confirm.
5. Select the required sample ID and press Next to confirm.
6. Select the required operator ID and press Next to confirm.