LaMotte COD Plus Colorimeter 1922-EX2 - Manual (Page 109)

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 21 Phosphate H)
from TESTING MENU.
5. Scroll to and select 21 Phosphate H from menu.
6. Rinse a clean tube (0290) with sample water. Fill to the 10 mL line with
sample.
7. Insert tube into chamber, close lid and select SCAN BLANK.
8. Remove tube from colorimeter. Use the 1.0 mL pipet (0354) to add 2.0
mL of *VM Phosphate Reagent (4410). Cap and mix. Wait 5 minutes for
full color development.
9. After 5 minute waiting period, mix, insert tube into chamber, close lid and
select SCAN SAMPLE. Record result.
10. Press
OFF button to turn colorimeter off or press EXIT button to exit to a
previous menu or make another menu selection.
PHOSPHATE - HIGH RANGE 2/2 COD PLUS TEST PROCEDURES 6/02