Ozone
Ozone
Page 2 of 4
Ozone_AccuVac_Other_IND_Eng_Ody.fm
Sample Collection, Storage, and Preservation
The chief consideration when collecting a sample is to prevent the escape of
ozone from the sample. The sample should be collected gently and analyzed
immediately. Warming the sample, or disturbing the sample by stirring or
shaking, will result in ozone loss. After collecting the sample, do not transfer it
from one container to another unless absolutely necessary.
Stability of Indigo Reagent
Because indigo is light-sensitive, the AccuVac Ampuls should be kept in the
dark at all times. The indigo solution, however, decomposes slowly under room
light after filling with sample. The blank ampule can be used for multiple
measurements during the same day.
5. Quickly invert both
ampules several times to
mix.
Some of the blue color will
be bleached if ozone is
present.
6. Wipe the ampules
with a cloth to remove
fingerprints or other
marks.
7. Place the sample into
the cell holder.
8. Touch Zero.
The display will show:
0.00 mg/L O
3
9. Place the blank into
the cell holder.
10. Touch Read.
Results will appear in
mg/L O
3
.
10 m L
10 m L
Zero
Read
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