Test Procedures
METHYLETHYLKETOXIME PROCEDURE
Use universal sample holder
1. Press
ON
button to turn spectrophotometer on.
2. Scroll to and select
PROGRAMMED TESTS
.
3. Scroll to and select
ALL TESTS
(or another sequence containing
58 m-e-ketoxime
) from
TESTING MENU
.
4. Scroll to and select
58 m-e-ketoxime
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 spectrophotometer.
8. Add 3 drops of *DEHA Reagent #1 (4791). Swirl to mix.
9. Add 3 drops of DEHA Reagent #2 (4792). Swirl to mix.
10. Add 3 drops of *DEHA Reagent #3 (4793). Invert 3 times to mix.
11. Insert the tube into chamber. Close lid.
12. Wait 15 minutes. Do not open the lid during the waiting time. The reaction is
photosensitive.
13. Remove tube from chamber. Invert 2 times to mix.
14. Immediately insert tube into chamber, close lid and select
SCAN SAMPLE
. Read within
30 seconds. Record result in ppm methylethylketoxime.
15. Press and hold
OFF
button to turn the spectrophotometer off or press
EXIT
button 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.
SMART Spectro 2 Test Procedures 05.02.16
OXYGEN SCAVENGERS
www.
GlobalScientificSupply
.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!
