LaMotte 1200-NA COLORIMETER - Manual (Page 3)

NITRATE - NITROGEN
3
NOTE: 11.
9. 10.
NOTE:
At the end of waiting period,
an undissolved portion of
*Nitrate Reducing Reagent
may remain in bottom of the
tube without affecting results.
Use the 0.1 g spoon
(0699) to add two
measures of *Nitrate
Reducing Reagent
(V-6279). Cap.
Hold tube by
index finger and
thumb and mix by
12.
inverting approximately
50-60 times a minute for
4 minutes . Wait 10
minutes for maximum
color development.
10
MIN
UTE
S
Wipe tube dry.
Align the index line with the
arrow on the meter, insert
CAL
I200
COLORIMETER
• • • • • • • • • • • • • • • • • •
READ
tube into chamber.
Close the lid. Push
the READ
button. Record
results as ppm
Nitrate Nitrogen.
To convert Nitrate Nitrogen
(NO -N) results to ppm Nitrate
3
(NO ), multiply by 4.4.
3
L Mott