Patent ID: 11933759
Assignee: PROTEINSIMPLE
Field: Measurement (Instruments)
Classification: CPC G  C | IPC C  G

Claim 10:
11. A method, comprising:
drawing a sample from a sample well through a capillary and into a cartridge reservoir fluidically coupled to the capillary and disposed above the sample well, the capillary being vertically oriented;
receiving, from a contact liquid level sensor that extends into the cartridge reservoir and is constructed of a conductive material, an electrical signal indicative of a fill level of a liquid within the cartridge reservoir;
applying a vacuum pressure to the cartridge reservoir to maintain the sample in a fixed position within the capillary ; and
applying an electric potential across the capillary to cause analytes within the sample to electrophoretically separate while applying the vacuum pressure to cause the sample to maintain the fixed position.