Reagent Cartridges and Related Systems and Methods

An apparatus, comprising:

• a first flexible container comprising an end and defining a first interior containing reagent;
• a second flexible container having an end and defines a second interior, the first flexible container positioned within the second interior;
• and
• a coupling having a first portion coupled to the end of the first flexible container and a second portion coupled to the end of the second flexible container, the coupling comprising a reagent port fluidly coupled to the first interior of the first flexible container and a pressure port fluidly coupled to the second interior of the second flexible container.

An apparatus, comprising:

• a system, comprising:
• a reservoir receptacle to receive a reservoir;
• a fluidic interface to be fluidly coupled to the reagent reservoir;
• a pump fluidly coupled to the fluidic interface, the pump comprising:
• a housing comprising a pressure port;
• a flexible container disposed in the housing and including an inlet and an outlet, each of the inlet and the outlet being externally accessible outside of the housing, the inlet being fluidly coupled to the fluidic interface;
• and
• a pressure source coupled with the pressure port and in fluid communication with the housing,
• a flow cell receptacle to receive a flow cell and comprising a flow cell interface fluidly coupled to the outlet of the flexible container,
• wherein fluid is to flow from the reservoir to the inlet of the flexible container, and
• wherein the pressure source is to pressurize the housing and urge the fluid out of the outlet of the flexible container toward the flow cell receptacle.