Color, True and Apparent
Color, True and Apparent
Page 2 of 4
ColorTru_None_Other_PCS_Eng_Ody.fm
Sample Collection, Storage and Preservation
Collect samples in clean plastic or glass bottles. Most reliable results are obtained
when samples are analyzed as soon as possible after collection. If prompt
analysis is impossible, fill bottles completely and cap tightly. Avoid excessive
agitation or prolonged contact with air. Samples can be stored for 24 hours by
cooling to 4 °C (39 °F). Warm to room temperature before analysis.
5. Pour another 50 mL
of deionized water
through the filter.
6. Fill a round sample
cell with 10 mL of filtered
deionized water from
step 5. (This is the blank.)
Discard the excess water
in the flask.
7. Pour about 50 mL of
sample through the filter.
8. Fill a second round
sample cell with 10 mL of
filtered sample. (This is
the prepared sample.)
9. Wipe the blank and
place it into the cell
holder.
10. Touch Zero.
The display will show:
0 units PtCo
11. Wipe the prepared
sample and place it into
the cell holder.
12. Touch Read.
Results will appear in
mg/L PtCo.
10 mL 10 mL
10 mL
Zero
10 mL
Read
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