Hach DR 2800, User Manual, Page: 70 / 96

70
Advanced Operations
7. The result is displayed and is to be compared with the nominal
data of the sample cell.
8. Press
CANCEL
to return to Optical Checks.
6.6.3.3 Stray Light Check
The Stray Light test is used to measure the stray light in the
instrument at 340 nm.
1. From the Optical Checks menu, press
STRAY LIGHT CHECK
.
2. Remove any cells from the cell compartment.
3. Insert the Adapter A for 10-mm rectangular cells in Cell
Compartment #2. Press
ZERO
.
4. Insert the sample cell into the Cell Compartment #2. Close the
cell compartment
. Press
START
.
5. The Average and Standard Deviation are calculated from three
successive absorbance measurements. The result is displayed
and is to be compared with the nominal data of the sample cell.
6. Press
CANCEL
to return to Optical Checks.