Hach DR/700 Procedures Manual page 618

OXYGEN, DISSOLVED, LR,
7.
Insert the
AccuVac Vial
Adapter into the cell
holder.
8.
Fill a Low Range
Dissolved Oxygen
AccuVac Ampul with
sample. Refer to
sampling and storage
for technique.
Note: Keep tip immersed
while the ampul fills
completely.
Note: One measure of
accuracy is to verify the
zero concentration of the
blank. Follow the steps
given in the Accuracy
Check.
Note: The ampul will
contain a small piece of
wire to maintain reagent
quality. The solution
color will be yellow.
61-62
continued
9.
Without inverting
the ampul,
immediately place the
ampul cap filled with
sample securely over
the ampul tip.
Note: The cap prevents
contamination with
atmospheric oxygen.