Hach POCKET COLORIMETER II Instruction Manual page 26

Fluoride, AccuVac® Method,
1.
Press the
POWER
turn the meter on.
The arrow should indicate
channel 2.
Note: See page 2—4
information on selecting the
correct range channel.
2.
key to Collect at least 40 mL of
sample in a 50-mL beaker.
Fill another 50-mL beaker
with at least 40 mL of
deionized water.
for
Note:
should be the same
temperature (± 1 °C).
continued
The sample and water
1—26
3.
Fill a SPADNS Fluoride
AccuVac Ampul with
sample. Fill another SPADNS
Fluoride AccuVac Ampul
with deionized water (the
blank).
Keep the tip of the
Note:
ampule immersed until the
ampule fills completely.