Sample Blank; Update/Edit Barcode Tests; Update Barcode Tests With Test Packaging (Not Available On All Models) - Hach Lange DR 3900 User Manual

5.5.4

Sample blank

5.5.5

Update/edit barcode tests

5.5.5.1

Update barcode tests with test packaging (not available on all models)

Turbidity and colour in the sample matrix can falsify the results of
a photometric analysis. The interference factors come from the
sample or are created by reactions with the reagents.
The influence of turbidity and/or colour can be eliminated or
reduced by taking a sample blank reading.
After the sample reading has been carried out, a special cell
(LCW919) with the sample blank is inserted in the cell
compartment. Measurement is automatic. The value of the
sample measurement is then corrected through addition or
subtraction of the blank value. The result is shown in the display
with the Blank Correction icon.
Some barcode tests do not require a sample blank value to be
determined, as turbidity and colour are dealt with during the test
procedure.
Note: For further information about the Help Guide ("Information" icon),
refer to Appendix A, page 143.
Using the data provided in the barcode, the instrument
automatically sets the reading wavelength and factors. If a
deviation in barcode data from the stored data is detected, the
instrument will require a data update and display the error
message "Barcode control number? Update program data!" .
1. Hold the packaging of the barcode test with the RFID symbol
in front of the RFID module of the instrument. A sound
indicates the successful transfer of data; the test is
automatically assessed
If the packaging is held in front of the RFID module a second
time, the current lot information of the test is shown in the
display. The test can be performed next according to the
process specification.
Standard programs
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