Hach DR/700 Procedures Manual page 357

BROMINE,
7.
Fill a 10-mL cell
to the 10-mL line
with sample (the
blank). Cap.
10.
Place the
prepared sample in
the cell holder.
Note: In bright light it
may be necessary to
close the cell
compartment cover.
d
continue
8.
Place the blank in
the cell holder.
Note: In bright light it
may be necessary to
close the cell
compartment cover.
11.
Press:
The display will count
down to 0. Then the
display will show the
results in mg/L
bromine (Br
Note: If sample
temporarily turns yellow
after reagent addition, or
flashes the upper range
limit, dilute a fresh
sample and repeat the
test. A slight loss of
bromine may occur
because of the dilution.
Multiply the result by the
appropriate dilution
factor; see Sample
Dilution Techniques
(Section 1).
52-31
9.
The display will
count down to 0.
Then the display will
show 0.00 mg/L and
the zero prompt will
turn off.
READ
).
2
Press:
ZERO