| 摘要 |
This invention relates generally to a volumetric pipet used to make a volumetric measurement and transfer a measured amount of liquid. More specifically the invention relates to a pipet that fills from the top, works well with automated systems because it does not require positioning devices or a supply of suction, is easy to rinse and rinses upon filling, and meets the precision requirements of class A volumetric glassware. The pipette of the invention may include a chamber for manipulation of the liquid before pipetting. The pipet is capable of delivering a repeatable predetermined volume of fluid, fills from the top and dispenses from the bottom, which eliminates a need for suction to fill the pipet. The pipet does not trap air in the measuring chamber and works without any valves making contact the sample liquid in the measuring chamber.
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