A plurality of transport lines having driving belts are driven to transport specimen racks on which a specimen container is disposed. A single driving motor having a rotating shaft, a shaft for transmitting power of the driving motor, drives the driving belt and a plurality of pulleys transmit rotation of the shaft to the belts to drive the belts.

A novel solution is proposed for processing a test tube transported on a test tube carrier by a conveyor so that spilling of the liquid in the test tube is reduced or even prevented, particularly an arrangement for sequencing and guiding travel of test tube carriers transported on at least one conveyor. The arrangement includes at least one rotatable deviator positioned to intersect the at least one conveyor. The deviator includes a horizontal deviator plate including at least one grip for receiving a test tube carrier. One contact surface is positioned vertically at a distance from the deviator plate and aligned with the grip. The contact surface is formed to contact the test tube carrier at a distance from the contact level of the grip and the carrier.

A method of rotating a sample container carrier on a transport plane of a laboratory sample distribution system is presented. The sample container carrier is rotated by using a movement relative to a number of rotator elements. A laboratory sample distribution system being able to perform such a method and a laboratory automation system comprising such a laboratory sample distribution system are also presented

Provided are a reaction cuvette loading device and a fully automatic chemiluminescence immunoassay apparatus. The reaction cuvette loading device comprises a transmission mechanism and a push mechanism, wherein the transmission mechanism comprises a baseplate and a first horizontal transmission mechanism provided on the baseplate; the push mechanism comprises a support assembly, a second horizontal transmission mechanism provided on the support assembly, and a push rod connected to the second horizontal transmission mechanism; and the push mechanism further comprises a direction guiding control block comprising a starting end provided at a terminal point of a cuvette pushing stroke of the push rod, a termination end provided at a starting point of the cuvette pushing stroke of the push rod, and a return track provided between the starting end and the termination end and bypassing the cuvette pushing stroke, and the separation distance between the starting end and termination end is not less than one vessel position and not more than two vessel positions.