Hach DR/700 Procedures Manual page 377

CHLORINE, FREE,
7.
Insert the
AccuVac Vial
Adapter into the cell
holder.
continued
8.
Fill a DPD Free
Chlorine Reagent
AccuVac Ampul with
sample.
Note: Keep the tip
immersed while the
ampul fills completely.
52-51
9.
Quickly invert the
ampul several times
to mix. Wipe off any
liquid or fingerprints.
Note: A pink color will
develop if free chlorine
is present.
Note: Accuracy is not
affected by undissolved
powder.