LaMotte SMART3 Colorimeter - Manual (Page 281)

PROCEDURE
1. Press and hold until colorimeter turns on.
2. Press ENTER to select TESTING MENU.
3. Select ALL TESTS (or another sequence containing 090 Sulfi de LR) from
TESTING MENU.
4. Scroll to and select 090 Sulfi de LR from menu.
5. Rinse a clean tube (0290) with sample water. Fill to the 10 mL line with sample.
6. Insert tube into chamber, close lid and select SCAN BLANK.
7. Remove tube from colorimeter. Use the 1.0 mL pipet (0354) to add 1.0 mL of
*Sulfi de Reagent A (V-4458). Cap and mix.
8. Add 6 drops of Sulfi de Reagent B (V-4459). Cap and mix. Wait 1 minute.
Solution will turn blue if sulfi des are present.
9. Use the 1.0 mL pipet (0354) to add 2.0 mL of Sulfi de Reagent C (4460). Cap
and mix. Color development is immediate and stable.
10. Insert tube into chamber, close lid and select SCAN SAMPLE. Record result.
11. Press
to turn colorimeter off or press
EXIT
to exit to a previous menu or
make another menu selection.
SMART3 Test Procedures 11.10 SULFIDE, Low Range
Test P
rocedures