Hach-Lange DR 6000 User Manual - Manual (Page 85)

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Expanded programs
9. Press Next.
The entered data is shown as a calibration curve.
Note: The correlation coefficient (r 2 ) is shown on the left below the
axes.
The linear equation corresponds to the standard setting.
10. Press Next graph.
The presentation changes to polynomial curve of the second
order.
11. Press Next graph.
The presentation changes to polynomial curve of the third
order.
12. Press Force 0 to change the setting from Off to On. The
curve then passes through the origin of the coordinate
system.
Note: This can have a detrimental effect on the correlation
coefficient (r
2 ).
13. Tap on Back to go back to the values table, or on Done to
go to the methods overview.
14. Go to section 6.1.1.4, page 87 .
Calibration using "Measure standards"
1. Press Measure standards.
2. Press Continue.
3. Press +.
4. Enter the standard concentration.
5. Press OK to confirm.
6. If necessary, repeat until all values have been entered. A
maximum of 24 values can be entered.
Note: To change a value in the table, mark the corresponding row.
Press the key of the unit (e. g. mg/L). Enter the changed value.
Note: For 13 mm round cells, a 10-times rotary measurement is
automatically performed.
7. Insert the zero solution into the cell compartment.
8. Press Zero.
9. Mark the row with the first standard concentration and insert
the respective cell.
10. Press Read.
11. If necessary, repeat until all standard solutions are
measured.