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

Claim 6:
7. An apparatus, comprising:
a capillary;
a reservoir fluidically coupled to the capillary, the reservoir having a first portion and a second portion separated from the first portion by a weir, an opening to the reservoir in fluid communication with the reservoir and the capillary such that a negative pressure applied to a headspace of the reservoir via the opening causes liquid from the capillary to partially fill the reservoir; and
a contact liquid level sensor protruding from a cap into the first portion of the reservoir, the cap and the contact liquid level sensor being electrically conductive such that (1) when the liquid within the reservoir contacts the contact liquid level sensor, a signal indicative of a quantity of the liquid within the reservoir and above the capillary is produced and (2) the cap and the contact liquid level sensor are configured to transmit an electric potential to the liquid within the reservoir and onto a sample within the capillary such that analytes within the sample within the capillary are electrophoretically separated.