LaMotte SMART3 Colorimeter - Manual (Page 80)

PROCEDURE
1. Press and hold until colorimeter turns on.
2. Press ENTER to select TESTING MENU.
3. Select ALL TESTS (or another sequence containing 002 Aluminum).
4. Scroll to and select 002 Aluminum from menu.
5. Rinse a clean colorimeter tube (0290) with sample water. Fill to the 10 mL line
with sample.
6. Insert tube into colorimeter chamber and select SCAN BLANK.
7. Rinse a clean test tube (0230) with sample water. Fill to the 5 mL line with
sample.
8. Remove tube from colorimeter. Empty sample from tube (0290).
9. Add 5 mL sample from test tube (0230) to empty tube (0290).
10. Use the 0.05 g spoon (0696) to add one measure of *Aluminum Inhibitor
Reagent (7865). Cap and mix to dissolve powder.
11. Use a 1.0 mL pipet (0354) to add 2 mL of *Aluminum Buffer Reagent (7866).
Cap and mix.
12. 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.
13. At end of 5 minute waiting period, mix, insert tube into chamber, close lid and
select SCAN SAMPLE. Record result.
14. Press to turn the colorimeter off or press
EXIT
to exit to a previous
menu or make another menu selection.
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 SMART3 Test Procedures 11.10
Test P
rocedures