LaMotte SMART Spectro Spectrophotometer - Manual (Page 87)

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
21 Chloride-TT) from TESTING MENU.
4. Scroll to and select 21 Chloride-TT from menu.
5. Rinse a tube (0290) with sample water. Fill to 10 mL with sample.
6. Insert the tube into chamber, close lid and select SCAN BLANK.
7. Remove the tube from Spectro.
8. Add one *Chloride Spectrophotometric Grade Tablet (3885A).
9. Use Tablet Crusher (0175) to crush tablet.
10. Cap tube.
11. Invert 2 times.
12. Wait 3 minutes. Do NOT mix.
13. Insert tube into chamber, close lid and select SCAN SAMPLE. Record result
in ppm chloride.
14. Press OFF button to turn the colorimeter off or press EXIT button to exit to a
previous menu or make another menu selection.
NOTE: For best possible results, a reagent blank should be determined to account
for any contribution to the test result by the reagent system. To determine the
reagent blank, follow the above test procedure to scan a distilled or deionized
water blank. Then follow the above procedure to perform the test on a distilled or
deionized water sample. This test result is the reagent blank. Subtract the reagent
blank from all subsequent test results of unknown samples.
The reagent system is temperature sensitive. The calibration is for 25ºC. If sample
is at 30ºC, multiply resulting ppm by 1.1. If the sample is at 20ºC, multiply resulting
ppm by 0.9.
CHLORIDE, TesTab SMART Spectro Test Procedures 2.11
Test P
rocedures