Nitrogen, Free Ammonia and Chloramine (Mono),
HRS MIN SEC
HRS MIN SEC
19.
Wait 5 minutes.
Color development
Note:
depends on sample
temperature. See
Table 1 on
page 1—20
for correct times.
FA
20.
Place the prepared Free
Ammonia sample into the
cell holder.
1—16
continued
21.
Cover the cell with the
instrument cover.