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Chlorine, Total
Zero
5.
When the timer
beeps, touch
.
Zero
The display will show:
0 µg/L
9.
®
Using a TenSette
Pipet and a clean tip,
transfer 1.0 mL of
indicator from the
ampule to the graduated
mixing cylinder. Swirl to
mix.
Proceed to step 10 within
one minute.
Chlorine, Total
Page 2 of 8
6.
Break open one ULR
Chlorine Buffer Solution
Ampule.
10.
Avoiding extra
agitation, carefully fill the
cylinder to the 50-mL
mark with sample.
Stopper the cylinder.
Gently invert it twice to
mix. This is the prepared
sample.
7.
®
Using a TenSette
Pipet and a clean tip,
transfer 1.0 mL of buffer
from the ampule to a
clean, treated 50-mL
graduated mixing
cylinder.
11.
Touch the timer icon.
Touch
.
OK
A three-minute reaction
time will begin.
Measure the reacted
sample 3–4 minutes after
mixing the sample and
reagents. If less than three
minutes elapses, the
reaction with chloramines
may be incomplete. A
reading after four minutes
may result in higher
reagent blank values.
8.
Break open one
ampule of DPD Indicator
Solution for Ultra Low
Range Chlorine.
12.
Introduce the
contents of the graduated
mixing cylinder into the
Pour-Thru cell.
When the timer beeps,
touch
. The result in
Read
µg/L chlorine will appear.
Note: If a dechlorinating agent
(e.g. sulfite or sulfur dioxide) is
present, the sample result
(corrected for the reagent
blank) will read "0" or a slightly
negative value.
ChlorineTot_PT_ULow_DPD_Eng_Ody.fm
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