Advanced Operations

6.7.3.2 Stray light check

The Stray Light test is used to measure the stray light in the instrument at 340 nm.

1.Press Stray Light Check in the Optical Checks menu.

2.Remove any cuvette/sample cell from the cell compartment.

3.Insert the adapter (A) for 10-mm rectangular cells in the cell compartment #2. Press Zero.

4.Insert the sample cuvette/cell or reference filter into the cell compartment #2. Close the cell compartment. Press Start.

5.The ”Average“ and ”Std Deviation“ are calculated from

100 successive absorbance measurements. The result is displayed and is to be compared with the nominal/standard data (given in the quality control certificate) of the sample cuvette/cell.

Note: Failings and passings will be defined by the user.

6.Press Cancel to return to Optical Checks.

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Hach DR 2800 user manual Stray light check, 100