Hach DR2400 - Page 434

Nitrate
Nitrate
Page 2 of 6
Nitrate_PP_Low_CDR_Eng_Ody.fm
5. When the timer
beeps, touch the timer
icon again.
Touch
OK.
A 2-minute reaction
period will begin.
6. When the timer
beeps, carefully pour
10 mL of the sample into
a clean, round sample
cell. Do not transfer any
cadmium particles to the
sample cell.
7. Add the contents of
one NitriVer3 Nitrite
Reagent Powder Pillow
to the sample cell (this is
the prepared sample).
Cap the sample cell.
8. Touch the timer icon.
Touch
OK.
Shake the sample cell
gently for 30 seconds.
A pink color will develop
if nitrate is present.
9. Touch the timer icon.
A 15-minute reaction
period will begin.
10. When the timer
beeps, fill a second
sample cell with 10 mL of
original sample (this is
the blank).
Cap the sample cell.
11. Place the blank into
the cell holder.
12. Touch Zero.
The display will show:
0.00 mg/L NO
3
–
–N
10 mL
10 mL
Zero