PURPOSE: To provide a quantitative pipette usable even under gravityfree environment such as cosmic space. ;CONSTITUTION: A freely expandable sleeve 3 is so mounted that its root part 3b projects inward from the front end 1a of a cylinder 1 so that a spacing 4 is formed between this projecting part 3b and the front end 1b of the cylinder. The length of the sleeve 3 is adjusted to comply with the volume of the liquid to be sucked and thereafter, the liquid is absorbed by a piston 2. The liquid creeps up on the inside wall of the sleeve 3 by a Marangoni effect but there is the spacing 4 and, therefore, more than the specified volume thereof does not creep up on the inside wall and does not enter the inside of the cylinder 1. This specified volume is separately determined and corrected.;COPYRIGHT: (C)1995,JPO
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