Hach DR2400 - Page 790

Zinc
Zinc
Page 2 of 6
Zinc_PP_Other_ZNC_Eng_Ody.fm
5. Pour 10 mL of the
solution into a sample
cell (this is the blank).
6. Use a plastic dropper
to add 0.5 mL of
cyclohexanone to the
remaining solution in the
graduated cylinder.
7. Touch the timer icon
Touch
OK.
A 30-second reaction
period will begin. During
the reaction period,
stopper the cylinder and
shake vigorously (the
prepared sample).
Note: The sample will be
reddish-orange, brown, or blue,
depending on the zinc
concentration.
8. Touch the timer icon.
Touch
OK.
A three-minute reaction
period will begin. During
this reaction period,
complete step 9.
9. Pour the solution
from the cylinder into a
round sample cell (this is
the prepared sample).
10. When the timer
beeps, wipe the blank
and place it into the cell
holder.
11. Touch Zero.
The display will show:
0.00 mg/L Zn
12. Wipe the prepared
sample and place it into
the cell holder.
Touch
Read.
Results will appear in
mg/L Zn.
10 mL
10 mL
10 mL
Zero
10 mL