Hach-Lange DR 3800 User Manual - Manual (Page 46)

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Standard Operations
5.4.5 Set the dilution factor
The Dilution Factor function is used to calculate the original
concentration of a sample that has been diluted by a known ratio.
For example, dilution factor can bring the analyzed concentration
within the test range.
1. Press Options>More…>Dilution Factor.
The number entered at the dilution factor prompt will be
multiplied by the result to compensate for the adjustment.
For example, if the sample has been diluted by a factor of 2,
enter 2. The default setting of the dilution factor is turned off.
2. Press OK to confirm. Press again OK.
Note: When a dilution is in effect, the dilution icon will appear on the
display.
Note: If using undiluted samples, set the dilution factor off again.
Note: For further information about the Help Guide (Information icon), see
Appendix B on page 143 .
5.4.6 Run a standard adjust
The Standard Adjust functions allows the calibration curve for a
stored program to be adjusted based on analysis of a known
standard solution. The Accuracy Check section of written
procedures often suggests a standard solution concentration for
this purpose.
Read a standard before setting Standard Adjust to On.