ORBECO SP600, Instruction Manual, Page: 110 / 334

108 SP600 Spectrophotometer 01/2008
1.1 Methods
Cyanide
with Reagent Test
0.005 – 0.2 mg/l CN / 5 – 200 μg/l CN
1. Fill a clean 50 mm cell with water sample .
2. Place the cell in the sample chamber making sure that
the positioning is correct.
3. Press ZERO key.
4. Remove the cell from the sample chamber. Empty the
cell and dry completely.
5. Fill a beaker with with 2 ml of water sample and 8
ml of deionized water .
6. Add 2 level spoons of No. 4 (grey) Cyanide-11 into
the prepared water sample. Dissolve reagent.
7. Add 2 level spoons of No. 4 (grey) Cyanide-12 and
dissolve reagent.
8. Fill the cell with the same size drops by holding the
bottle vertically and squeeze slowly:
3 drops of Cyanide-13
9. Fill the 50 mm cell with the colored test solution.
10. Place the cell in the sample chamber making sure that
the positioning is correct.
11. Press
TEST
key.
Wait for a reaction period of 10 minutes .
After the reaction period is finished the measurement
starts automatically.
The result is shown in the display as Cyanide.
prepare Zero
press ZERO
Zero accepted
prepare Test
press TEST
Countdown
10:00
1 5 6