US 11,913,904 B2
Reusable cartridge for capillary electrophoresis
Hui Xu, Dublin, CA (US); and Uyen Nguyen, San Jose, CA (US)
Assigned to ProteinSimple, San Jose, CA (US)
Filed by ProteinSimple, San Jose, CA (US)
Filed on Jul. 26, 2021, as Appl. No. 17/385,553.
Application 17/385,553 is a continuation of application No. PCT/US2020/015214, filed on Jan. 27, 2020.
Claims priority of provisional application 62/797,110, filed on Jan. 25, 2019.
Prior Publication US 2021/0356427 A1, Nov. 18, 2021
Int. Cl. G01N 27/447 (2006.01); G01N 27/453 (2006.01)
CPC G01N 27/44756 (2013.01) [G01N 27/44791 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a housing;
a capillary containing a separation medium disposed within the housing;
a buffer container containing run buffer, a first end of the capillary fluidically coupled to the buffer container;
the housing, the capillary, and the buffer container collectively configured to facilitate electrophoretic separation of a sample disposed within the capillary; and
a reservoir disposed between the buffer container and the capillary, the reservoir containing separation medium and having a larger cross-sectional area than the capillary, the reservoir configured to absorb run buffer that migrates from the buffer container during electrophoretic separation of the sample.