Hach DR/700 Procedures Manual page 265

IRON, TOTAL
For water, wastewater and seawater
FerroVer Method* (Powder Pillows or AccuVac Ampuls),
USEPA approved for reporting (digestion - see Section 1)**
USING POWDER PILLOWS
1.
Install module
50.01
in a DR/700.
Note: If samples cannot
be analyzed
immediately, see
Sampling and Storage
following these steps.
Adjust pH of stored
samples before analysis.
Note: Determination of
total iron requires a
prior digestion; use the
mild vigorous or
Digesdahl digestion
(Section I).
*Adapted from Standard Methods for the Examination of Water and Wastewater.
**Federal Register, 1980, 45(126), 43459
(0 to 5.00 mg/L)
2.
Press:
l/O
The display will show
500 nm
and module number
50.01
Note: Determination of
total iron needs a prior
digestion; use the mild,
vigorous or Digesdahl
digestion (Section I.)
50-15
Method 8008
3.
After 2 seconds
the display will show
a program number,
concentration units,
decimal position and
the zero prompt. If
necessary, press the
UP ARROW key until
the lower display
shows program
number
50.03.1