Hach-Lange DR 3800 User Manual - Manual (Page 113)

113
Advanced Operations
6.8.3.3 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 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 data of the
sample cuvette/cell.
6. Press Cancel to return to Optical Checks.