Hach DR2400 - Page 428

Nitrate
Nitrate
Page 2 of 6
Nitrate_AVPP_Mid_CDR_Eng_Ody.fm
5. When the timer
beeps, touch the timer
icon. Touch
OK.
A five-minute reaction
period will begin.
An amber color will
develop if nitrate is
present.
6. When the timer
beeps, fill a second round
sample cell with 10 mL of
sample (this is the blank).
7. Place the blank into
the cell holder.
8. Touch Zero.
The display will show:
0.0 mg/L NO
3
–
–N
9. Within two minutes
after the timer beeps,
place the prepared
sample into the cell
holder.
10. Touch Read.
Results will appear in
mg/L NO
3
–
–N.
10 mL
Zero
10 mL
Read