Hach DR/700 Procedures Manual page 433

PHOSPHORUS, REACTIVE
For water, wastewater, seawater
(Also called Orthophosphate) Amino Acid Method*
1.
Install module
number
52.01
in a DR/700.
Note: If samples cannot
be analyzed
immediately, see
Sampling and Storage
following these steps.
*Adapted from Standard Methods for the Examination of Water and Wastewater.
2.
Press:
I/O
The display will show
525 nm
and module number
52.01
52-107
Method 8178
(0 to 30.00 mg/L PO
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
52.15.1
3-
)
4