Figure 8-3.Pharmacy equipment.
FUSIONThis process is commonly called
melting changing a solid to a semisolid or liq-
uid by applying heat. All substances have a
definite temperature at which this change occurs,
which is known as the melting point.
Pharmaceutically, fusion is used extensively
in making ointments, creams, lotions, and sup-
positories, since the solid in its liquid state is easier
to mix with other ingredients.
Other common processes involving the ap-
plication of heat are:
DISTILLATIONConverting a liquid to a
vapor by applying heat and condensing the vapor
back to a liquid by cooling. The purpose here is
purification and separation of liquids.
Now you are ready to become familiar
the tools or instruments of pharmacy. See figure
This is a flat rectangular or square slab of glass
or porcelain. It is also an excellent work surface
for triturating and levitating small amounts of
ointments and suppository masses. The ointment
tile should never be scratched and should be
cleaned and stored when not in use.
A knifelike utensil with a rounded, flexible,
smoothly ground blade, available in various sizes.