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page 58
Display
Measuring
Displays the
measured value
Relaxing
Finished
Displays
results:
Average (mN/m)
Standard
(mN/m)
Temperature (°C)
Action
automatic
automatic
automatic
the
final
deviation
Ring method measurements
Explanation
Returns to the found surface
height.
Records the measured value:
The sample vessel containing the
liquid moves down until a
maximum force is registered. The
vessel is moved back upwards; the
value of the maximum force is now
determined exactly.
The liquid is moved upwards again
until the maximum force is reduced
by the percentage value given under
Relaxation
.
Measuring
The steps
are
repeated
until
measurement has been completed.
The measurement is complete. The
data found are used to display the
mean value of the interfacial tension,
the
standard
deviation
temperature.
Relaxing
and
all
the
and
the
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