Pipetting pear
The pipetting pears offered by AllChimie are the essential manual aspiration accessories for use with graduated and Pasteur glass pipettes. They replace the dangerous mouth pipetting with a safe mechanical system, protecting the technician from any contact with the handled liquids.
Manufactured from natural rubber or synthetic elastomer, they offer long-lasting flexibility and good resistance to common solvents. Several models exist: simple compression pear for rapid transfers, 3-valve pear (A, S, E) for precise control of filling, aspiration and expulsion, and conical valveless pear suited to Pasteur pipettes.
The model selection depends on the required accuracy and the handled volume. The 3-valve pear is the reference for volumetric pipetting operations in analytical chemistry, quality control and preparation of standard solutions. Simple compression versions suit routine transfers in biology and general chemistry.
The pipetting pear is naturally used with a glass graduated pipette, a plastic pipette or a plastic Pasteur pipette, for sampling from a beaker or bottle containing a stock solution prepared in a volumetric flask. AllChimie selects pears designed for prolonged use without excessive manual fatigue.
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Sku LZ.PPS1Silicone pipetting bulb, three valves | AllLabo