Hach DR/700 Procedures Manual page 559

BORON,
continued
10.
Pour 10 mL of
the blank and 10 mL
of the prepared
sample into separate
sample cells. Label
and cap the cells
13.
Place the
prepared sample in
the cell holder.
Note: In bright light, it
may be necessary to
close the cell
compartment cover.
11.
Place the blank
in the cell holder.
Note: In bright light, it
may be necessary to
close the cell
compartment cover.
14.
Press:
READ
The display will
count down to 0.
Then the display will
show the results in
mg/L boron (B).
61-3
12.
Press: ZERO
The display will
count down to 0.
Then the display will
show 0.0 mg/L and
the zero prompt will
turn off.