1—40
Chlorine, Free and Total, HR, continued
4.Press: ZERO/SCROLL
The display will show
“- - - -” followed by “0.0”.
Remove the blank.
5.Fill another 1-cm/10-mL
sample cell to the 5-mL line
with sample. Cap.
Note: Do not use the same
sample cells for free and
total chlorine without
thoroughly rinsing the cells
between the free and total
tests.
6.Add the contents of two
DPD Free Chlorine or two
DPD Total Chlorine Powder
Pillows to the sample cell
(the prepared sample).
Cap the cell and shake
gently for 20 seconds.
Note: Gentle shaking
dissipates bubbles which
may form in samples
containing dissolved gases.
5957088.book Page 40 Friday, March 22, 2013 3:54 PM
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