Hach DR/700 Procedures Manual page 386

CHLORINE, TOTAL, continued
USING ACCUVAC AMPULS
1.
Install the DR/700
module number
52.01
in the DR/700.
Note: Samples must be
analyzed immediately
and cannot be preserved
for later analysis.
4.
Fill a cell with 10
mL of sample (the
blank). Cap. Collect
at least 40 mL of
sample in the 50-mL
beaker.
2.
Press:
I/O
The display will show
525 nm
and module number
52.01
5.
Fill a DPD Total
Chlorine Reagent
AccuVac Ampul with
sample.
Note: Keep the tip
immersed while the
ampul fills completely.
52-60
3.
After 2 seconds
the display will show
a program number,
concentration units
and the zero prompt.
If necessary, press the
key until
UP ARROW
the lower display
shows program
number
52.08.1
6.
Quickly invert the
ampul several times
to mix. Wipe off any
liquid or fingerprints.
Note: A pink color will
form if chlorine is
present.
Note: Accuracy is not
affected by undissolved
powder.