Hach DR/700 Procedures Manual page 304

PLATINUM,
16.
Place the blank
in the cell holder.
Note: In bright light it
may be necessary to
close the cell
compartment cover.
19.
Press:
READ
The display will
count down to 0.
Then the display will
show the results in
g/L platinum (Pt).
Note: If necessary,
correct for any
dilution used in Step 1
if other than 1 mL to
1000 mL.
continued
17.
Press:
ZERO
The display will
count down to 0.
Then the display will
show zero
concentration and the
zero and S1 prompt
will turn off.
50-54
18.
Place the
prepared sample in
the cell holder.
Note: In bright light it
may be necessary to
close the cell
compartment cover.