Hach-Lange DR 3900 User Manual - Manual (Page 61)

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Standard programs
Note: The reagent blank icon is shown in the result display (refer to
arrow) when the function is active.
5.4.8 To carry out a multiple determination
A sample can be measured several times using the multiple
determination functions.
1. Before reading the concentration, press
Options>More>Multiple Determination.
2. Press On.
The number of multiple determinations is shown under
"Measurements".
3. To change the value displayed on the button, press the
button. Use the alphanumeric keypad to enter the new value.
Press OK to confirm.
4. The Multiple Determination icon will be shown on the display.
5.4.9 Analysis of samples
1. Press Stored Programs and select a program.
Note: If available, the procedural instruction is indicated on the
display via the Info icon.
2. Insert the zero solution cell into the cell compartment.
3. Press Zero.