Method for dosing a liquid using a pipette and a syringe, and pipette for operating a syringe for dosing a liquid

US10906034B2 · kind B2 · utility

Assignee

• Eppendorf AG · DE

Inventors

• Herbert Belgardt · Hamburg, DE
• Peter Molitor · Andale, US
• Burkhardt Reichmuth · Hamburg, DE

Key dates

• Filing date: Feb 15, 2016
• Grant date: Feb 2, 2021
• Expiry date: Jun 24, 2036

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01L2400/0478
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method for dosing a liquid using a pipette with adjustable dosing step size and an indicating equipment and a syringe that can be operated using the pipette, wherein the syringe is detachably connected to the pipette, at option, the dosing step size is set, or the dosing step size set before is maintained, the dosing volume adjusted via the dosing step size is indicated by means of the indicating equipment, the maximum number of dosing steps possible without refilling the syringe, with the set dosing step size and completely filled syringe is indicated by means of the indicating equipment, liquid is aspirated into the syringe, a reverse stroke is performed after the syringe is filled with liquid, dosing steps are performed, the performed dosing steps are counted and the number of performed dosing steps and/or the number of dosing steps still possible without refilling the syringe is determined and indicated by means of the indicating equipment, after performing the maximum number of dosing steps possible without refilling the syringe, either the syringe is detached from the pipette, or the previous steps are performed anew by means of the same syringe, wherein in the dosing step,…