Hach DR2400 - Page 74

Aluminum
Aluminum
Page 2 of 6
Aluminum_PP_Other_ALN_Eng_Ody.fm
5. Touch the timer icon.
Touch
OK.
Invert repeatedly for one
minute to dissolve the
powder. Undissolved
powder will cause
inconsistent results.
6. Pour 25 mL of the
mixture into a 25-mL
sample cell. (This is the
prepared sample.)
7. Add the contents of
one Bleaching 3 Reagent
Powder Pillow to the
remaining 25 mL in the
graduated cylinder.
Stopper.
8. Touch the timer icon.
Touch
OK.
Vigorously shake for 30
seconds. (This solution
should turn a light to
medium orange.)
9. Pour the 25 mL of
solution from the
cylinder into a second
25-mL sample cell. (This
is the blank.)
10. Touch the timer icon.
Touch
OK.
A 15-minute reaction
period will begin.
11. Within 5 minutes of
the timer beep, wipe the
blank and place it into the
cell holder.
12. Touch Zero.
The display will show:
0.000 mg/L Al
3+
13. Immediately wipe the
prepared sample and
place it into the cell
holder.
14. Touch Read.
Results will appear in
mg/L Al
3+
.
10 mL
20 mL
25 mL
10 mL
20 mL
25 mL
10 mL
20 mL
25 mL
Zero
10 mL
20 mL
25 mL
Read