LaMotte SMART 2 - Manual (Page 64)

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 2 Aluminum).
5. Scroll to and select 2 Aluminum from menu.
6. Rinse a clean colorimeter tube (0290) with sample water. Fill to the 10
mL line with sample.
7. Insert tube into colorimeter chamber and select SCAN BLANK
.
8. Rinse a clean test tube (0230) with sample water. Fill to the 5 mL line
with sample.
9. Remove tube from colorimeter. Empty sample from tube (0290).
10. Add 5 mL sample from test tube (0230) to empty tube (0290).
11. Use the 0.05 g spoon (0696) to add one measure of *Aluminum Inhibitor
Reagent (7865). Cap and mix to dissolve powder.
12. Use a 1.0 mL pipet (0354) to add 2 mL of *Aluminum Buffer Reagent
(7866). Cap and mix.
13. Use a second 1.0 mL pipet (0354) to add 1 mL of Aluminum Indicator
Reagent (7867). Cap and mix contents. Wait 5 minutes for maximum
color development.
14. At end of 5 minute waiting period, mix, insert tube into chamber, close lid
and select SCAN SAMPLE. Record result.
15. Press OFF button to turn the colorimeter off or press
EXIT button to exit
to a previous menu or make another menu selection.
þ NOTE: For the 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. Add 5 drops of Aluminum Complexing Reagent
(7868). 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. It is
necessary to determine the reagent blank only when a new lot number of
reagents is obtained.
Aluminum 2/2 Smart2 TEST PROCEDURES 2.04