Hach DR/700 - Page 261

50-11
7. Wait 3 minutes. 8. Place the blank in
the cell holder.
Note: In bright light
close the cell
compartment cover.
9. Press: ZERO
The display will
count down to 0. then
the display will show
0.00 mg/L and the
zero prompt will turn
off.
IRON, FERROUS, continued
10. Insert the
AccuVac Vial
Adapter into the cell
holder.
11. Place the
prepared sample in
the cell holder.
Note: In bright light
close the cell
compartment cover.
12. Press: READ
The display will
count down to 0.
Then the display will
show the results in
mg/L ferrous iron
(Fe
2+
).
3 minutes