Lamotte SMART3 Colorimeter User Manual download pdf (Page 194)

PROCEDURE

1. Press and hold until colorimeter turns on.

2. Press

ENTER

to select TESTING MENU.

3. Select ALL TESTS (or another sequence containing 051 Iron Bipyridyl) from

TESTING MENU.

4. Scroll to and select 051 Iron Bipyridyl 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 0.5 mL pipet (0353) to add one

measure of *Iron Reagent #1 (V-4450). Cap and mix.

8. Use the 0.1 g spoon (0699) to add 0.1 g of *Iron Reagent #2 Powder (V-4451).

Cap and shake vigorously for 30 seconds. Wait three minutes for maximum

color development.

9. At the end of 3 minute waiting period, DO NOT MIX. Insert tube into chamber,

close lid and select SCAN SAMPLE. Record result.

10. Press

to turn colorimeter off or press

EXIT

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. It is necessary to

determine the reagent blank only when a new lot number of reagents is obtained.

IRON, Bipyridyl SMART3 Test Procedures 11.10

Test Procedures

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Lamotte SMART3 Colorimeter User Manual Page 194