Hach-Lange DR 5000 brewerie analysis, supplementary software LZV570 - Manual (Page 34)

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Working procedures
2.8.1 Procedure for measuring photometric iodine sample
1. Prepare samples and iodine blank solution as described in the
working procedure.
2. Select STORED PROGRAMS in the “Main Menu”. Select test
number 810 .
3. Insert cuvette containing phosphate buffer into the cell
compartment. Close the cell compartment. Touch ZERO .
4. Insert blank value cuvette containing the prepared iodine blank
solution (see sample preparation) into the cell compartment.
Close the cell compartment. Touch
READ . Display: E1.
5. Insert the sample cuvette containing the prepared sample into
the cell compartment. Close the cell compartment. Touch
READ . Display: E2.
6. Introduce 0.5 ml 0.02N iodine solution into sample cuvette. Mix
the contents immediately with plastic spatula, and after 30 sec
insert the cuvette into the cell compartment, close the cover
and touch
READ . The result is displayed.
Note: Analysis of additional samples: Repeat working procedure from
point 4. The prepared iodine blank solution can be used for the complete
series of measurements.
2.8.1.1 Executing the test with the sipper module
Information about the installation, module configurations and
sample introduction of the sipper module can be found in the user
manual of the DR 5000 Spectrophotometer (15.3.3. Installation
Sipper Module, page 133).