Hach DR/850, Procedures Manual, Page: 196 / 460

196
9.
Place the prepared
sample into the cell
holder. Tightly cover the
sample cell with the
instrument cap.
10.
Press:
READ
The cursor will move to
the right, then the result
in mg/L iron (Fe) will
be displayed.
Note: Standard Adjust may
be performed using a
prepared standard (see
Section 1).
Using AccuVac Ampuls
1.
Enter the stored
program number for iron
(Fe), AccuVac ampuls.
Press:
PRGM
The display will show:
PRGM ?
Note: Adjust pH of stored
samples before analysis.
Note: Determination of
total iron requires a
digestion prior to analysis
(see Section 2).
2.
Press:
33 ENTER
The display will show
mg/L, Fe and the
ZERO icon .
3.
Fill a sample cell
(the blank) with at least
10 mL of sample.
Collect at least 40 mL of
sample in a 50-mL
beaker.
Note: For turbid samples,
treat the blank with one
0.1 g scoop of RoVer Rust
Remover. Swirl to mix.
4.
Place the blank into
the cell holder. Tightly
cover the sample cell
with the instrument cap.
IRON, TOTAL,
continued