TEST INSTRUCTIONS - Geotech Environmental Equipment
TEST INSTRUCTIONS - Geotech Environmental Equipment
TEST INSTRUCTIONS - Geotech Environmental Equipment
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PROCEDURE<br />
1. Press and hold ON button until colorimeter turns on.<br />
2. Press ENTER to start.<br />
3. Press ENTER to select <strong>TEST</strong>ING MENU.<br />
4. Select ALL <strong>TEST</strong>S (or another sequence containing 35 Cyanide)<br />
from <strong>TEST</strong>ING MENU.<br />
5. Scroll to and select 35 Cyanide from menu.<br />
6. Rinse a clean tube (0290) with sample water. Fill to the 10 mL line with<br />
sample.<br />
7. Dip the end of plastic rod (0519) into water sample and touch it to a small<br />
piece (1/4 inch) of pH test paper (2955) to wet paper. Read pH<br />
immediately from color chart.<br />
a) If pH is below 10, raise the pH by adding *Sodium Hydroxide, 1N<br />
(4004) one drop at a time with stirring. Check pH after each drop with a<br />
new piece of pH test paper. Continue adjustment until pH is between 10.5<br />
and 11.0.<br />
b) If pH is above 11.5, lower pH by adding *Hydrochloric Acid (6130)<br />
one drop at a time with stirring. Check pH after each drop with a new<br />
piece of pH test paper. Continue adjustment until pH is between 10.5 and<br />
11.0.<br />
8. Insert tube into chamber, close lid and select SCAN BLANK.<br />
9. Remove tube from colorimeter. Use the 1.0 mL pipet (0354) to add 1.0<br />
mL of Cyanide Buffer (2850PS) to tube. Cap and mix.<br />
10. Use one 0.1 g spoon (0699) to add one level measure of *Cyanide Cl<br />
Reagent (2794DS). Cap and invert 10 times to mix. Wait 30 seconds.<br />
11. During the 30 second waiting period, carefully fill a second 0.1 g spoon<br />
(0699) with one level measure of *Cyanide Indicator Reagent (2793DS).<br />
12. At the end of the 30 second waiting period, immediately add the level<br />
measure of *Cyanide Indicator Reagent (2793DS). Cap and shake<br />
vigorously for 20 seconds. Wait 20 minutes for maximum color<br />
development.<br />
13. At the end of the twenty minute waiting period, mix, insert tube into<br />
chamber, close lid and select SCAN SAMPLE. Record result.<br />
14. Press OFF button to turn colorimeter off or press EXIT button to exit to a<br />
previous menu or make another menu selection.<br />
Cyanide 2/2 Smart2 <strong>TEST</strong> PROCEDURES 2.04