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 Testing Menu.<br />
4. Select ALL <strong>TEST</strong>S (or another sequence containing 47 H Per-HR)<br />
from <strong>TEST</strong>ING MENU.<br />
5. Scroll to and select 47 H Per-HR from menu.<br />
6. Use the pipet (0342) to add 5 drops of the sample water to a tube (0290).<br />
7. Dilute to the 10 mL line with distilled or hydrogen peroxide-free water.<br />
8. Insert the tube into chamber, close lid and select SCAN BLANK.<br />
9. Remove the tube from colorimeter and add 4 drops of *Hydrogen<br />
Peroxide Reagent #1 (6452). Cap and mix.<br />
10. Add one *Hydrogen Peroxide LR Tablet (6454). Crush tablet with Tablet<br />
Crusher (0175). Cap and mix for 30 seconds. Solution will turn pink if<br />
hydrogen peroxide is present. Wait 5 minutes for full color development.<br />
11. At the end of 5 minute waiting period, mix, insert tube into chamber,<br />
close lid and select SCAN SAMPLE. Record result.<br />
12. Press OFF button to turn the meter off or press EXIT button to exit to a<br />
previous menu or make another menu selection.<br />
NOTES: For best possible results, a blank should be determined to account for<br />
any contribution to the test result by the reagent system. To determine the<br />
reagent blank, follow the above test procedure to scan a distilled or deionized<br />
water blank. Then follow the above procedure to perform the test on a distilled<br />
or deionized water sample. This test result is the reagent blank. Subtract the<br />
reagent blank from all subsequent test results of unknown samples. It is<br />
necessary to determine the reagent blank only when a new lot number of<br />
reagents are obtained.<br />
For the most accurate results, the sample and reagents should be at 25 ±4°C.<br />
Hydrogen Peroxide–HR 2/2 Smart2 <strong>TEST</strong> PROCEDURES 2.04