TEST INSTRUCTIONS - Geotech Environmental Equipment
TEST INSTRUCTIONS - Geotech Environmental Equipment
TEST INSTRUCTIONS - Geotech Environmental Equipment
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BENZOTRIAZOLE PROCEDURE<br />
1. Press and hold ON button until colorimeter turns on.<br />
2. Press ENTER to start.<br />
3. Press ENTER to select Testing Menu.<br />
4. Select ALL <strong>TEST</strong>S (or another sequence containing 10 B triazole<br />
from <strong>TEST</strong>ING MENU.<br />
5. Scroll to and select 10 B triazole from menu.<br />
6. Rinse a tube (0290) with sample water. Fill to 10 mL with sample.<br />
7. Insert the tube into chamber, close lid and select SCAN BLANK.<br />
8. Remove the tube from colorimeter. Discard the sample.<br />
9. Adjust the sample water temperature to between 20 and 25C if necessary.<br />
10. Fill the graduated cylinder (0417) to the 25 mL line with sample water.<br />
Transfer to the Erlenmeyer Flask (2-2109).<br />
11. Use the pH Test Paper (9259) to check the pH of the sample. If the pH is<br />
not between 4 and 6, add one drop of *Sulfuric Acid, 1.0N (6139). Swirl<br />
to mix. Continue adding *Sulfuric Acid, 1.0N (6139) one drop at a time,<br />
swirling to mix and checking the pH after each drop, until the pH is<br />
between 4 and 6.<br />
12. Add 10 drops of NaK Tartrate (7841).<br />
13. Use the 0.25 g spoon (0695) to add one measure of *Benzotriazole<br />
Reagent (3818). Swirl to mix until the powder has dissolved.<br />
14. Replace the flask in the slot in the case. Insert the Penray Lamp (31041-1)<br />
into the flask. Plug in the Penray Power Source (31041-2) and turn the<br />
lamp on for exactly 5 minutes. Remove the lamp from the flask. Rinse and<br />
wipe the lamp dry.<br />
15. Fill a test tube (0290) to the 10 mL line with the digested sample. Cap<br />
tube.<br />
16. Insert tube into chamber, close lid and select SCAN SAMPLE. Record<br />
result in ppm Benzotriazole.<br />
17. Press OFF button to turn the colorimeter off or press EXIT button to exit<br />
to a previous menu or make another menu selection.<br />
NOTE: For best possible results, a reagent blank should be determined to<br />
account for any contribution to the test result by the reagent system. To<br />
determine the reagent blank, follow the above test procedure to scan a distilled<br />
or deionized water blank. Then follow the above procedure to perform the test<br />
on a distilled or deionized water sample. This test result is the reagent blank.<br />
Subtract the reagent blank from all subsequent test results of unknown samples.<br />
It is necessary to determine the reagent blank only when a new lot number of<br />
reagents is obtained.<br />
Smart2 <strong>TEST</strong> PROCEDURES 7.06 Benzotriazole/Tolyltriazole 3/4