LaMotte COD Plus Colorimeter 1922-EX2 - Manual (Page 97)

PROCEDURE
1. Press and hold ON button until colorimeter turns on.
2. Press ENTER to start.
3. Press ENTER to select TESTING MENU.
4. Select ALL TESTS (or another sequence containing 16 Moly-HR) from
TESTING MENU
.
5. Scroll to and select 16 Moly-HR from menu.
6. Fill clean tube (0290) to 10 mL line with sample water.
7. Insert tube into chamber, close lid and select SCAN BLANK.
8. Remove tube from colorimeter. Use a 1.0 mL pipet (0372) to add 1.0 mL
of *Mo Buffer (3997). Cap and mix.
9. Use a second 1.0 mL pipet (0372) to add 1.0 mL of *Molybdenum
Oxidizing Reagent (6485). Cap and mix.
10. Use 0.05 g spoon (0696) to add one measure of Molybdenum Indicator
Powder (6486). Cap and mix until powder dissolves. Solution will turn
yellow if molybdenum is present.
11. Insert tube into chamber, close lid and select SCAN SAMPLE. Record
result.
12. Press
OFF button to turn colorimeter off or press EXIT button to exit to a
previous menu or make another menu selection.
MOLYBDENUM - HIGH RANGE 2/2 COD PLUS TEST PROCEDURES 6/02