Lamotte SMART3 Colorimeter User Manual download pdf (Page 92)

TOLYLTRIAZOLE PROCEDURE

1. Press and hold until colorimeter turns on.

2. Press

ENTER

to select Testing Menu.

3. Select ALL TESTS (or another sequence containing 097 Tolyltriazole) from

TESTING MENU.

4. Scroll to and select 097 Tolyltriazole 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 colorimeter. Discard the sample.

8. Adjust the sample water temperature to between 20 and 25°C if necessary.

9. Fill the graduated cylinder (0417) to the 25 mL line with sample water. Transfer

to the Erlenmeyer Flask (2-2109).

10. Use the pH Test Paper (2956) to check the pH of the sample. If the pH is not

between 4 and 6, add one drop of *Sulfuric Acid, 1.0N (6139). Swirl to mix.

Continue adding *Sulfuric Acid, 1.0N (6139) one drop at a time, swirling to mix

and checking the pH after each drop, until the pH is between 4 and 6.

11. Add 10 drops of Potassium Sodium Tartrate (7841WT).

12. Use the 0.25 g spoon (0695) to add one measure of *Benzotriazole Reagent

(3818). Swirl to mix until the powder has dissolved.

13. Replace the ﬂ ask in the slot in the case. Insert the Pen-Ray Lamp (31041-1)

into the ﬂ ask. Plug in the Pen-Ray Power Source (31041-2) and turn the lamp

on for exactly 5 minutes. Remove the lamp from the ﬂ ask. Rinse and wipe the

lamp dry.

14. Fill a test tube (0290) to the 10 mL line with the digested sample. Cap tube.

15. Insert tube into chamber, close lid and select SCAN SAMPLE. Record result in

ppm Tolyltriazole.

16. Press

to turn the 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.

BENZOTRIAZOLE/TOLYTRIAZOLE SMART3 Test Procedures 11.10

Test Procedures

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Lamotte SMART3 Colorimeter User Manual Page 92