Abstract: Analytical instruments are provided that can include a sample inlet component with the sample inlet component including a first sampling port; a plurality of sample capturing assemblies; and a first valve assembly in fluid communication with both the sampling port and the sample capturing assemblies. The instrument can further include a sample analysis component in fluid communication with the first valve assembly of the sample inlet component; and an instrument control component in controlling communication with both the sample inlet component and the analysis component. Instrumental analysis methods are provided that can include continuously providing sample to at least one of a plurality of sample capturing assemblies; and selectively analyzing the contents of at least one of the plurality of sample capturing assemblies.

Abstract: Analytical instruments are provided that can include a sample inlet component with the sample inlet component including a first sampling port; a plurality of sample capturing assemblies; and a first valve assembly in fluid communication with both the sampling port and the sample capturing assemblies. The instrument can further include a sample analysis component in fluid communication with the first valve assembly of the sample inlet component; and an instrument control component in controlling communication with both the sample inlet component and the analysis component. Instrumental analysis methods are provided that can include continuously providing sample to at least one of a plurality of sample capturing assemblies; and selectively analyzing the contents of at least one of the plurality of sample capturing assemblies.

Abstract: A system and method for compensating for hysteresis in laboratory liquid handling apparatus. The system comprises a carriage holding a drive gear that meshes with and drives a gear rack. A hysteresis brake is also provided on the carriage and opposes the movement of the drive gear to provide continued positive engagement of the drive gear with the gear rack even when the system is static. When the direction of travel of the gear rack is reversed, the drive gear rotates an additional distance that compensates for the aggregate hysteresis found in the drive train.

Abstract: A system and method for compensating for hysteresis in laboratory liquid handling apparatus. The system comprises a carriage holding a drive gear that meshes with and drives a gear rack. A hysteresis brake is also provided on the carriage and opposes the movement of the drive gear to provide continued positive engagement of the drive gear with the gear rack even when the system is static. When the direction of travel of the gear rack is reversed, the drive gear rotates an additional distance that compensates for the aggregate hysteresis found in the drive train.