Hach DR/700 - Page 109

42-25
NICKEL, continued
10. Press: I/O
The display will show
420 nm
and module number
42.01
11. After 2 seconds,
the display will show
a program number,
the concentration
units, decimal
position and the zero
prompt. If necessary,
press the
UP ARROW
key until the lower
display shows
program number
42.04.1
12. Wait for the
layers to separate
(about 5 minutes).
Insert a pea-size
cotton plug into the
delivery tube of the
separatory funnel.
Drain the chloroform
layer into a sample
cell (the prepared
sample). Stopper.