Hach DR2400 - Page 448

Nitrite
Nitrite
Page 2 of 6
Nitrite_AVPP_Low_DAZ_Eng_Ody.fm
5. When the timer
beeps, fill a second
sample cell with 10 mL
of sample (this is the
blank).
6. Wipe the blank and
place it into the cell
holder.
7. Touch Zero.
The display will show:
0.000 mg/L NO
2
–
–N
8. Wipe the prepared
sample and place it into
the cell holder.
Touch
Read.
Results will appear in
mg/L NO
2
–
–N.
1. Touch
Hach Programs.
Select program
375 N, Nitrite LR AV.
Touch
Start.
2. Pour at least 40 mL of
sample into a 50-mL
beaker.
3. Fill a NitriVer 3
Nitrite AccuVac
®
Ampul
with sample. Keep the tip
immersed while the
ampule fills.
4. Invert the ampule
several times to mix.
A pink color will develop
if nitrite is present.
10 mL
Zero
10 mL
AccuVac
®
Ampul Method 8507
Hach Programs