Analytical equipment and instruments, namely, liquid chromatography or mass spectrometry apparatus for laboratory use, for performing biological and chemical separations, purification, screening and identification for medical laboratory, clinical laboratory, and scientific laboratory use and parts therefor; chromatography apparatus for medical laboratory, clinical laboratory, and scientific laboratory use and parts therefor; laboratory devices used for liquid chromatography apparatus, namely, autosamplers, and sample managers comprised of laboratory robots with integrated computer hardware and computer software, used for preparation and injection of samples; liquid chromatography systems comprising pumps, detectors, injectors, gradient controllers, and mixing chambers for medical laboratory, clinical laboratory, and scientific laboratory use; chromatography columns for laboratory use; mass spectrometry apparatus and instruments for medical laboratory, clinical laboratory, and scientific laboratory use and parts therefor; operating software for liquid chromatography or mass spectrometry instruments; disposable cartridges for performing research sample analysis.