LaMotte SMART Spectro Spectrophotometer - Manual (Page 248)

PROCEDURE
Use universal sample holder.
1. Press and hold ON button until spectrophotometer turns on.
2. Scroll to and select PROGRAMMED TESTS.
3. Scroll to and select ALL TESTS (or another sequence containing
90 Sulfi de-LR) from TESTING MENU.
4. Scroll to and select 90 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 Spectro. 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 OFF button to turn spectrophotometer off or press EXIT button to exit to
a previous menu or make another menu selection.
SMART Spectro Test Procedures 2.11 SULFIDE
Test P
rocedures