24
• If the concentration exceeds the range limits (>40.0 ppm for
Low Range
, >400 ppm for
High Range
- see page 6 for range limits) the exceeded range limit will be displayed
blinking. Another titration can be started by pressing
Restart
.
•
“Wrong input”
error message appears when the input reading (mV) exceeds the specified
limits. The mV value and the concentration will blink indicating an error.
• Select the corresponding range according to the table below:
TOTAL SO
2
MEASUREMENT PROCEDURE
e
g
n
a
R
w
o
L
)
e
l
p
m
a
s
L
m
0
5
(
e
g
n
a
R
h
g
i
H
)
e
l
p
m
a
s
L
m
0
5
(
m
p
p
0
.
0
4
o
t
0
.
1
m
p
p
0
0
4
o
t
0
3
Low Range (Free & Total SO
2
) - 50 ml
High Range (Free & Total SO
2
) - 50 ml
Note
: •The volume of wine added is critical to the measurement accuracy.
Pipettes are recommended.
•Failure to use a clean pipette will result in erroneous readings.
• Fill the 20 mL beaker up to the 5 mL mark with the
HI 84500-61
Alkaline Reagent
, add the contents to the 100 mL beaker containing
the sample.
• Cover the beaker, swirl and wait for 10 minutes.
• Fill the 20 mL beaker up to the 5 mL mark with the
HI 84500-60
Acid
Reagent
, add the contents to the 100 mL beaker containing the sample.
• Ensure the pump is primed with the correct titrant for the selected range (
HI 84500-50
Low
Range Titrant or
HI 84500-51
High Range Titrant).
Sample preparation:
Using a clean pipette to precisely add the appropriate amount of wine
sample to a clean 100 mL beaker as indicated below:
