2—19
User-Entered Calibration, continued
9. Insert the reagent blank or deionized water into the cell holder. Cover the
blank with the instrument cap.
10. Press the
READ/ENTER key. The meter will measure and display the absorbance
value for “S0”.
11. Remove the sample blank. Press the
ZERO/SCROLL key. “S1” will appear. Press
the
READ/ENTER key, then enter the first standard value.
Note: Press the
READ/ENTER
key to move from digit to digit. Use the
ZERO/SCROLL
key to
change the number.
12. After completing entry of the first standard value, press the READ/ENTER key.
The display will show “A1”.
13. Insert the first reacted standard solution into the cell holder. Cover the
prepared standard with the instrument cap.
14. Press the
READ/ENTER key. The meter will measure and display the absorbance
value for S1.
15. The calibration is complete with two points. If additional standards are
required, press
ZERO/SCROLL until “Add” appears on the display. Repeat
steps 11–14 to enter additional standards.
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