Method for dosing a liquid quantity and pipette for dosing a liquid quantity
AssigneeFesto AG & Co.
InventorMartin BOCHTERLE
Life of this patent
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Abstract
A method for dosing a liquid quantity, including the steps of: moving a working fluid in a fluid channel of a pipetting tip support, which fluid channel extends at least from a first fluid channel limit to a second fluid channel limit, detecting a fluid movement taking place over the first fluid channel limit and/or the second fluid channel limit with a sensor arrangement associated with the fluid channel, which sensor arrangement includes a first pressure sensor and a further sensor from the group: second pressure sensor, position sensor.
Claims21
A method for dosing a liquid quantity, comprising the steps of:
- moving a working fluid in a fluid channel of a pipetting tip support, which fluid channel extends at least from a first fluid channel limit to a second fluid channel limit, detecting a fluid movement taking place over the first fluid channel limit and/or the second fluid channel limit with a sensor arrangement associated with the fluid channel, which sensor arrangement comprises a first pressure sensor and a further sensor from the group:
- second pressure sensor, position sensor, wherein at least one characteristic value from the group:
- change of the amount of the working fluid in the fluid channel, pipetting tip pressure in a pipetting tip coupled to the pipetting tip support, volume flow of a sample fluid flowing into a pipetting tip coupled to the pipetting tip support, viscosity of a sample fluid flowing into a pipetting tip coupled to the pipetting tip support, volume of a sample fluid held in a pipetting tip coupled to the pipetting tip support is determined with a sensor signal of the first pressure sensor and a sensor signal of the further sensor.
A pipette for dosing a liquid quantity, comprising a pipetting tip support, a fluid channel associated to the pipetting tip support, a sensor arrangement which is associated to the fluid channel and comprises a first pressure sensor and a further sensor from the group:
- second pressure sensor, position sensor, and a processing apparatus which is set up to retrieve signals from the sensor arrangement, wherein the fluid channel extends from a first fluid channel limit to a second fluid channel limit, wherein the processing apparatus is configured to determine at least one characteristic value from the group:
- change of the amount of the working fluid in the fluid channel, pipetting tip pressure in a pipetting tip coupled to the pipetting tip support, volume flow of a sample fluid flowing into a pipetting tip coupled to the pipetting tip support, viscosity of a sample fluid flowing into a pipetting tip coupled to the pipetting tip support, volume of a sample fluid held in a pipetting tip coupled to the pipetting tip support with a sensor signal of the first pressure sensor and a sensor signal of the further sensor.
Dependencies are inferred from the claim text.