Hach DR/700 - Page 608

61-52
NITROGEN, MONOCHLORAMINE, continued
7. Promptly add the
contents of one
Monochloramine
Reagent Pillow to the
cell labeled free
ammonia and one to
the cell labeled
monochloramine.
Cap and shake to
dissolve.
8. Wait 15 minutes.
While waiting, wipe
fingerprints, liquids,
etc. from the cells.
9. Place the cell
labeled blank into the
cell holder.
Note: In bright sunlight
it may be necessary to
close the cell
compartment cover.
10. 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.
11. Place the cell
labeled
monochloramine in
the cell holder.
12. Press: READ
The display will
count down to 0.
Then the display will
show the
monochloramine
results in mg/L NH
3
as N.
Note: To convert results
to other units, see
Table 1.
15 minutes