Hach-Lange DR2800 eco - Manual (Page 43)

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Advanced Operations
10. Insert sample cuvette/cell into the cell compartment and press
Read.
11. 5 Replicates of blanking and reading lead to results.
12. The result is displayed and is to be compared with the
nominal/standard data of the sample cuvette/cell.
13. Press Cancel to return to Optical Checks.
6.1.3.4 Verification kit
The Verification Kit (see Section 9 on page 123 ) is designed for
periodic monitoring of scattered light, photometric accuracy and the
wavelength accuracy of the spectrophotometers.
When results exceed allowable tolerances (given in the quality
control certificate to the test record), contact the manufacturer.
1. Press Verification Kit in the Optical Checks menu.
2. Press Nominal Values.