attension Theta, User Manual

Page: 19 / 74

16
Pulsating drop experiment
Make sure that all the equipment to be used with the experiment are cleaned, usually performed by
rinsing with ethanol and distilled water. Attach the needle (or other equivalent object) to the syringe
clamp (#11 on figure 1) and tighten the clamp. Bring the solid sample stage to the appropriate position so
that for

Sessile drop experiments the solid surface is visible and level.

Pendant drop experiments the sample stage can be removed from the image.

Interfacial tension experiments the liquid inside a cuvette or another vessel completely fills the
screen.

Meniscus experiments the liquid surface is visible and level.
Check the quality of the image. Do not change the zoom without a recalibration! An image focused on
the needle is generally also focused on a drop from that needle.
When starting a measurement the first thing will always be to fill in the experimental parameters in the
recipe sheet (Figure 3.15). After the parameters have been filled once, you are able to save the recipe
and load it next time by clicking the Recipe Manager in the upper part of the experiment window as
shown in Figure 3.15.