Abstract: A sample handling method, in which the information on the sample to be examined is transferred throughout the entire measuring process by transferring the sample cup. The sample cups are handled in two independently operating drums, in which case at least two different handling phases can be carried out simultaneously in the measuring device. The diagnostic measuring device comprises a cassette drum, on the circumference of which the sample cup cassettes containing sample cups have been placed. The sample cup is fed to the first handling drum, which is simultaneously an incubation drum. After that the sample cup is transferred to a second handling drum, where washing, drying, measuring and discharge of the sample cup are carried out. The drums have been placed near each other, overlapping so that the transfers of the sample cup can be performed directly from one drum to another by means of transfer plungers.

Abstract: A device for counting liquid scintillation samples which can count a single sample or several samples simultaneously. A transport system moves samples from a storage section to a counting section. The samples are placed on sample plate holders to assist the transport system in movement of the sample from the storage section to the counting section.

Abstract: An arrangement for counting liquid scintillation samples on bottom-window multi-well sample plates in a liquid scintillation counter. The sample plates include a plurality of samples wells having light impermeable side walls and a light permeable bottom sheet which covers and forms the bottoms of said sample wells. The liquid scintillation counter includes at least one photomultiplier tube and a sample plate holder. The sample plate holder includes a device to hold sample plates of different sizes and a device to enable transporting of the sample plate holder by the scintillation counter. For preventing light passage between sample wells in the permeable bottom sheet a light permeable adhesive foil provided with black lines or other light passage preventing treatment between the sample wells is attached to the bottom side of the sample plate.

Abstract: An arrangement for improving the counting of liquid scintillation samples including a plurality of separate sample wells, a plate holder surrounding the sides of each sample well so that each plate holder forms an optically separate compartment for each sample well, at least one photomultiplier tube adjacent each sample well, and a coating of light reflective or light scattering material on the inner surfaces of said plate holders.

Abstract: An apparatus for counting liquid scintillation samples which includes a sample plate containing a plurality of cup-shaped sample wells, a photomultiplier assembly over the tops of said cup-shaped sample wells, a photomultiplier assembly beneath the bottoms of said cup-shaped sample wells and light reflective tubes extending upwardly from said lower photomultiplier assembly and surrounding each cup-shaped sample well.