Hach-Lange DR 3900 User Manual - Manual (Page 62)

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Standard programs
4. Remove the zero solution cell from the cell compartment.
Insert the sample cell into the cell compartment.
5. Press Read. The result will be displayed.
Note: To define a sample dilution, press the Dilution key in the
toolbar.
6. For data storage, refer to section 5.3.1, page 43 .
5.4.10 Update/edit tests (not available on all models)
5.4.10.1 General advices for program update and edit
For a manual test update and for a new programming of a test,
refer to
section 5.4.10.2, page 62 and section 5.4.10.3, page 63 .
Note: Only in very few cases does the revision of a test require the test
specifications to be updated.
To update and edit barcode tests, refer to section 5.5.5, page 67 .
5.4.10.2 Manual update of test data
When a test is selected the instrument automatically sets the
reading wavelength and factors.
Tests are continuously reviewed for simplified handling and to
make sure current legal requirements are followed. This can lead
to a change in the procedural instructions or an alteration to the
factors. If such an alteration is indicated on the test packaging,
update the instrument data according to the data supplied on the
process specification inside the test packaging.
For updating from the Internet, refer to section 5.5.5.4, page 70 .
1. Press Stored Programs in the Main Menu and select a
program.
2. Press Program Options and then Edit.