System and method for drawing a solution

1 . A method for drawing a solution, the method comprising:

applying a vacuum to a first output port ( 22 ) of a filter ( 14 );

moving, via an actuator ( 18 ), the solution along a flow path ( 26 ) defined in part by an input port ( 20 ) of the filter and a second output port ( 24 ) of the filter;

restricting flow of the solution from a downstream device ( 30 ) to the second output port via a one-way check valve ( 44 );

operating the actuator in conjunction with a flow exchanger ( 34 ) to selectively direct the solution from the downstream device to a sensor ( 32 ) for quality control checks before dispensing;

wherein the flow exchanger comprises:

a first port ( 66 ) in fluid communication with the one-way check valve;

a second port ( 68 ) in fluid communication with and directly coupled to the downstream device;

a third port ( 70 ) in fluid communication with a normally closed one-way check valve ( 46 ), wherein the normally closed one-way check valve is disposed between the sensor and the third port; and

wherein the one-way check valve ( 44 ) is directly coupled to the second output port ( 24 ) and the first port ( 66 ).

2 . The method of claim 1 further comprising:

receiving the solution at a dispenser in fluid communication with the second output port.

3 . The method of claim 2 , wherein the dispenser is a syringe and the actuator is a plunger of the syringe.

4 . The method of claim 1 further comprising:

restricting flow of the solution out of the first output port via a second filter ( 36 ).

5 . The method of claim 1 , wherein the solution is hyperpolarized.

6 . The method of claim 1 further comprising:

conditioning the solution via a receiver vessel in fluid communication with the input port.