Abstract: A method for introducing a sample rack holding a plurality of sample receptacles into a receiving bay in a housing of an automated analytical system is disclosed. The method is carried out by manually moving the sample rack from a loading position towards a processing position along a lane in the receiving bay, pausing the movement when the rack reaches a focusing position, moving a reader to focuse onto the lane, resuming the movement of the sample rack and detecting features of the sample rack during the movement, positioning, detecting, and locking the sample rack in the processing position, and processing the content of the sample receptacles.

Abstract: A laboratory instrument for processing at least one sample is disclosed. The laboratory instrument includes at least one housing having at least one sample processing device disposed therein, at least one reagent storage compartment reversibly removable from the housing, and at least one safety indicator. The safety indicator is configured for indicating if the reagent storage compartment has been removed from the housing and reinserted into the housing. The laboratory instrument is configured for automatically altering a detectable state of the safety indicator during the process of removing and reinserting the reagent storage compartment.