Pipet Pasteur, hazards

In general, solid solutes should be weighed on weighing paper or plastic weighing boats, using an analytical or top-loading balance. Liquids are more conveniently dispensed by volumetric techniques however, this assumes that the density is known. If a small amount of a liquid is to be weighed, it should be added to a tared flask by means of a disposable Pasteur pipet with a latex bulb. The hazardous properties of all materials should be known before use and the proper safety precautions obeyed. 

PIPET, PASTEUR A glass tube designed for the transfer of liquids. Its unique characteristic is its very fine, long, needle-like delivery tip which allows its use in small tubes. This sharp tip can present a hazard if carelessly handled or disposed of improperly. 

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