When the rider on the scale is used, return
it to zero after each weighing.
Recheck the balance of the instrument
after each substance is weighed.
Clean and properly secure the balance
when weighing is completed.
Care of the Balance
Never add or remove items from the
balance unless the balance is locked. It is
the small knob at the bottom front of the
balance. When this knob is turned all the
way to the right, the balance beams will not
move and are referred to as locked.
When this knob is turned all the way to the
left, the balance beams will move to give
the operator a reading. This position is
referred to as the unlocked position.
Keep in a closed case in a dry, protected
Never leave the balance unlocked when not
Handle weights with forceps to avoid col-
lection of foreign matter that can cause
Clean only with a dry rag. Never use any
liquid on the balance.
Always protect the pan with paper. Waxed
paper is best.
If the balance is to be moved for any
distance, consult Remingtons Phar-
maceutical Sciences for instructions on how
to secure the balance to prevent damage.
Syrups are concentrated aqueous solutions of
containing flavoring or medicinal
Methods of Preparation
In preparing syrups, the sucrose may be
dissolved with the aid of heat, by agitation, or
by percolation. The process to be used depends
upon the ingredients of the syrup and the time
available for completing its manufacture.
USES: Many of the syrups are used as
vehicles. Their sweet taste causes them to be a
preferred form for the administration of drugs.
EXAMPLES: Simple Syrup; Syrup of Orange
Elixirs are aromatic, sweetened hydroalcoholic
solutions containing medicinal substances. They
are liquids having an aromatic odor and a pleas-
ant taste. The color of elixirs varies according to
the nature of the ingredients; some are artificially
Methods of Preparations
Simple solution is the general process
employed in preparing elixirs. Many are prepared,
however, by adding the medicinal substances
directly to aromatic elixir, which is an elixir-base.
While elixirs are very simple to mix, it should be
noted that most elixirs are very difficult to filter,
and since most elixirs require filtration, suction
filtration is the recommended method.
USES: Used internally. Their uses vary
according to their ingredients.
EXAMPLE: Elixir of Terpin Hydrate
Lotions are liquid preparations, usually
aqueous, containing the insoluble substances in-
tended for external application. The insoluble in-
gredients must be in very fine particles to prevent
irritation to the skin. They are dispensed with
Shake Well labels and External Use Only
USES: The use of each lotion is determined
by its respective ingredients.
EXAMPLE: Calamine lotion
Suspensions are coarse dispersions comprised
of finely divided insoluble material suspended in
a liquid medium. In order to keep the insoluble
material in suspension, a third agent, called a
suspending agent, is required.
Method of Preparation
There are no general methods for the prepara-
tion of suspensions; however, in order for the in-
soluble ingredients to remain in suspension, they