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Method for leak-testing hand-held piston stroke pipettes and associated leak-testing apparatus
Method for leak-testing hand-held piston stroke pipettes and associated leak-testing apparatus
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机译:手持式活塞冲程移液器的泄漏测试方法及相关的泄漏测试装置
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摘要
A method for leak testing of hand-held piston stroke pipettes and a corresponding leak testing apparatus (1) for performing the method. Essential to the system is a holder (8) for the sealed connection of a pipette tip (3) to the leak-testing apparatus. A line system (9) with connecting sections of the leak-testing apparatus forms a specific connection volume. The pipette tip (3) is evacuated to a measuring pressure below atmospheric pressure. With the vacuum pump (5) disconnected and the connection volume sealed off, the pressure is measured after a specific time interval, and any possible rise in pressure is determined. An indication of the serviceability of the pipette (2) is generated from the pressure rise determined.
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