Hach DR/700 Procedures Manual page 721

PHOSPHORUS, REACTIVE
(0 to 2.50 mg/L PO
For water, wastewater, seawater
(also called: Orthophosphate) PhosVer 3 (Ascorbic Acid)
Method* (Powder Pillows or AccuVac Ampuls),
USEPA accepted for reporting**
USING POWDER PILLOWS
1.
Install DR/700
module
81.01
in the instrument.
*Adapted from Standard Methods for the Examination of Water and Wastewater.
**Procedure is equivalent to USEPA method 365.2 and Standard Method 4500-P-E for
wastewater.
3-
)
4
2.
Press:
l/O
The display will show
810 nm
and module number
81.01
81-47
Method 8048
3.
After 2 seconds,
the display will show
a program number,
concentration units,
decimal position and
the zero prompt. If
necessary, press the
key until
UP ARROW
the lower display
shows program
number
81.02.1