Patent ID: 11874256
Assignee: WATERS TECHNOLOGIES CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A method for evaluating system inertness, the method comprising:
injecting a sample into a system, wherein the sample comprises a positive control;
the system comprising:
a sample injector having a sample injection needle for injecting the sample;
a sample reservoir container in fluid communication with the sample injector;
a detector downstream of the sample injector; and
fluid conduits connecting the sample injector, sample reservoir container, and detector,
wherein interior surfaces of the fluid conduits, sample injector, sample reservoir container, and detector form a fluidic flow path having wetted surfaces, and
wherein at least a portion of the wetted surfaces of the fluidic flow path are coated with an inert coating, and wherein the inert coating is inert to at least one analyte in the sample;

detecting the positive control with the detector; and
analyzing a value associated with the detected positive control to determine system inertness.