Hach DR/700 - Page 545

57-39
Method 8120
SILVER (0 to 0.600 mg/L)
For water and wastewater
Colorimetric Method
1. Install module
57.01
in a DR/700.
Note: If sample cannot
be analyzed immediately,
see Sampling and
Storage below. Adjust
the pH of stored
samples before analysis.
2. Press: I/O
The display will show
575 nm
and module number
57.01
3. 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
57.08.1.
Note: If cyanide is
present, digest the
sample; see Digestion
following these steps.