Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...
Patent
1986-12-16
1988-12-13
Noland, Tom
Measuring and testing
Instrument proving or calibrating
Volume of flow, speed of flow, volume rate of flow, or mass...
7386418, G01F 2500, B01L 300, G01N 114
Patent
active
047901764
ABSTRACT:
The invention relates to a process and a device for calibrating a sampling and metering pipette and a pipette adapted to be used in the process with the device. The volume of the sampling chamber of the pipette is adjusted to zero by means of a knurled button (3) and an adjusting screw (7) is actuated to set the stroke of a plunger for taking a sample at a zero value. The volume of the sample chamber is adjusted by means of the knurled button (3) to determine a mean value of the sample volume, and a new adjustment of the brake screw (7) is made to a value corresponding to the difference between a displayed volume value and the mean value of the sample volume.
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patent: 4671123 (1987-06-01), Magnussen, Jr. et al.
patent: 4672857 (1987-06-01), MacDermott
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