Hach DR/700 Procedures Manual page 530

NICKEL, AUTOCATALYTIC,
7.
Place the blank in
the cell holder.
Note: In bright sunlight
it may be necessary to
close the cell
compartment cover.
10.
Press:
READ
The display will
count down to 0.
Then the display will
show the results in
g/L nickel (Ni).
Note: This method gives
accurate results on
nearly all bath
formulations. If the
bath formulation in use
responds differently, a
new manual calibration
should be done on this
bath formulation. See
User Stored Programs
(Section 1). Follow the
procedures in the
Operation Section of the
instrument manual.
8.
Press:
ZERO
The display will
count down to 0.
Then the display will
show 0.00 g/L and the
zero prompt will turn
off.
57-24
continued
9.
Place the prepared
sample in the cell
holder.
Note: In bright sunlight
it may be necessary to
close the cell
compartment cover.