Hach DR300 Manuel De L'utilisateur page 18

c. Push . The display shows "- - - -", then "0.00".
5. Push and hold
6. Push until "USEr" shows, then push
7. Push until "CAL" shows, then push
8. When "S0" shows on the display, push
9. Enter 00.00 (or 000.0) for the blank value.
Push the
to the next digit. Push
10. When "A0" shows on the display, push
absorbance of the blank.
The display shows the absorbance value for "S0".
11. Remove the sample cell from the cell holder.
12. Prepare the sample. Refer to the test procedure. For the sample,
use the standard solution concentration given in the test procedure
documentation.
13. Clean the sample cell with a no-lint cloth.
14. Push to show "S1" (or "Add"), then push
15. Enter the concentration value of the first calibration standard, then
push .
16. When "A1" shows on the display, do the steps that follow to
measure the absorbance:
a. Insert the reacted standard sample cell in the cell holder.
b. Install the instrument cap over the cell holder.
c. Push . The display shows the absorbance value for "S1".
17. The calibration is completed with two calibration points. If additional
standards are necessary for calibration:
Do steps 11
18. Remove the sample cell from the cell holder.
18 English
for 3 seconds to enter menu mode.
or to change the number that flashes. Push
to go to the previous digit.
– 16 again to measure more calibration standards.
.
.
.
to measure the
.
to go