LaMotte SMART Spectro Spectrophotometer - Manual (Page 109)

PROCEDURE
Use universal sample holder.
1. Press and hold ON button until spectrophotometer turns on.
2. Scroll to and select PROGRAMMED TESTS from menu.
3. Scroll to and select ALL TESTS (or another sequence containing
20 CHLOR DIOX) from TESTING MENU.
4. Scroll to and select 20 CHLOR DIOX from menu.
5. Rinse a clean tube (0290) with sample water. Fill to 10 mL line with sample.
6. Insert tube into chamber, close lid and select SCAN BLANK.
7. Remove tube from Spectro. Pour out all but a suffi cient amount of sample
water to cover tablet. Add 5 drops of Glycine Solution (6811).
8. 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.
9. Insert tube into chamber, close lid and select SCAN SAMPLE.
10. Press OFF button to turn spectrophotometer off or press EXIT button to exit to
a previous menu or make another menu selection.
CHLORINE DIOXIDE SMART Spectro Test Procedures 2.11
Test P
rocedures