Thermo Fisher Scientific C101 Colorimeter - Manual (Page 34)

Measurement: Bromine
C104 Colorimeter
30
Add content of one
Chlorine,Total (DPD)
Reagent Sachet Invert vial approximately
20 seconds until powder
dissolves
7. Gently push the vial back fully into the sample well of the meter,
whilst again aligning the ▼ mark on the vial with the ▲ mark on the
meter.
8. Wait for two minutes and then press the READ/ENTER key within
four minutes from the time the DPD Total reagent was added to the
vial.
9. The meter will flash [bR] whilst the measurement is taken. It will then
display the Bromine concentration in parts per million (ppm).
Bromine
Sample
READ
ENTER
ppm