Thermo Fisher Scientific C101 Colorimeter - Manual (Page 28)

Measurement: Chlorine Dioxide
C103 Colorimeter
24
Chlorine
Dioxide
Sample
READ
ENTER
ppm
Add content of one
Chlorine Dioxide (Glycine)
Reagent Sachet
Swirl vial approximately
20 seconds until powder
dissolves
7. Unscrew the cap from the vial and add into it the content of a
Chlorine, Free (DPD) Reagent Sachet.
8. Replace the cap, ensuring it is screwed on finger tight to the vial.
Swirl the vial repeatedly for approximately 20 seconds, until the
powder has dissolved.
Note: A small amount of the powder may remain un-dissolved in the vial, but
this will not affect the measurement. Do not shake or invert the vial as this
may result in the loss of Chlorine Dioxide.
Swirl vial approximately
20 seconds until powder
dissolves
Add content of one
Chlorine, Free (DPD)
Reagent Sachet
9. 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.
10. Press the READ/ENTER key within one minute from the time the
Chlorine, Free (DPD) Reagent Sachet was added to the vial.
11. The meter will flash [CLO2] whilst the measurement is taken. It will
then display the Chlorine Dioxide concentration in parts per million
(ppm).