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Nitrogen, Total
5.
Heat the reaction tube
in the reactor block at
100 °C for 60 minutes.
9.
Pipet 0.2 mL of
Dimethylphenol Solution
D (HCT 111 D) into a
sample vial (blue cap).
13.
Touch the timer icon.
A 15-minute reaction
period will begin.
Nitrogen, Total
Page 2 of 6
6.
After the heating
period, remove the tube
from the reactor block
and place it in a cooling
rack.
10.
Cap the vial and
invert three times to mix.
14.
Wipe the outside of
the zero vial (white cap)
and the sample vial with
a damp towel followed
with a dry one to remove
fingerprints and other
marks.
7.
When the reaction
tube has cooled to room
temperature, add a
colorless MicroCap C
(HCT 111 C) and cap the
tube.
11.
Immediately pipet
1.0 mL of digested
sample from the reaction
tube into the sample vial.
15.
Install the 16-mm
adapter.
Note: See Section 2.6 in the
Instrument Manual for
installation details.
When the timer beeps,
place the zero vial (white
cap) into the cell holder.
NitrogenTot_UniCell_Other_PSD_Eng_Ody.fm
8.
Invert the tube
several times until the
solid material in the cap
is fully dissolved.
12.
Cap the sample vial
and invert it several times
until the reagents are
mixed and appear
uniform.
Zero
16.
Touch
.
Zero
The display will show:
0.00 mg/L N
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