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Pharmaceutical Terms and Defination

Definitions of important terms used in pharmaceuticals.
Alcohol: The term "alcohol" without qualification means ethanol (95 percent). Other dilutions of ethanol are indicated by the term "ethanol" or "alcohol" followed by a statement of the percentage by volume of ethanol
Desiccator: A tightly-closed container of suitable size and design that maintains an atmosphere of low moisture content by means of silica gel or phosphorus pentoxide or other suitable desiccants.
Drying and ignition to constant weight: Two consecutive weighings after the drying or igniting operations do not differ by more than 0.5 mg, the second weighing following an additional period of drying or of ignition respectively appropriate to the nature and quantity of the residue.

Ethanol: The term "ethanol" without qualification means anhydrous ethanol or absolute alcohol.
Filtration: Unless otherwise stated, filtration is the passing of a liquid through a suitable filter paper or equivalent device until the filtrate is clear.
Freshly prepared: Made not more than 24 hours before it is issued for use.
Label: Any printed packing material, including package inserts that provide information on the article.
Negligible: A quantity not exceeding 0.50 mg.
Solution: Where the name of the solvent is not stated, "solution" implies a solution in water. The water used complies with the requirements of the monograph on Purified Water. The term 'distilled water' indicates Purified Water prepared by distillation.
Temperature: The symbol
Water: If the term is used without qualification it means Purified.
Water of the Pharmacopoeia: The term 'distilled water' indicates Purified Water prepared by distillation.
Water-bath: A bath of boiling water unless water at another temperature is indicated. Other methods of heating may be used provided the required temperature is approximately maintained but not exceeded.

Ankur Choudhary is India's first professional pharmaceutical blogger, author and founder of, a widely-read pharmaceutical blog since 2008. Sign-up for the free email updates for your daily dose of pharmaceutical tips.
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