LaMotte SMART 2 - Manual (Page 110)

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 20 CHLOR DIOX)
from TESTING MENU.
5. Scroll to and select 20 CHLOR DIOX from menu.
6. Rinse a clean tube (0290) with sample water. Fill to 10 mL line with
sample.
7. Insert tube into chamber, close lid and select SCAN BLANK.
8. Remove tube from colorimeter. Pour out all but a sufficient amount of
sample water to cover tablet. Add 5 drops of Glycine Solution (6811).
9. Add one *Chlorine DPD #1 Instrument Grade Tablet (6903A). Crush
tablet with tablet crusher. Cap and shake until tablet dissolves. Fill to 10
mL line with sample water. Solution will turn pink if chlorine dioxide is
present. Wait 15 seconds, but no longer than 30 seconds. Mix.
10. Insert tube into chamber, close lid and select SCAN SAMPLE.
11. Press OFF button to turn colorimeter off or press
EXIT button to exit to a
previous menu or make another menu selection.
Chlorine Dioxide 2/2 Smart2 TEST PROCEDURES 4.08