Luminometer apparatus

A luminometer apparatus inside a light-shielded room shielded from external light, the luminometer apparatus comprising:

• a container rack that is loaded with holding containers, each discretely accommodating at least one selected from a sample and a luminescent reagent which produces a luminescent reaction when mixed with the sample;
• a rotary plate that turns, while holding a plurality of reaction containers which accommodate a mixture liquid of the sample and the luminescent reagent along an outer circumference of the rotary plate, wherein the rotary plate includes a centrally positioned support configured to support the container rack, wherein the rotary plate includes a gap formed between at least a pair of adjacent reaction containers of the plurality of reaction containers, and wherein the rotary plate is provided with a transporter configured to transport the container rack to the centrally positioned support through the gap;
• a dispensation mechanism configured to dispense said sample or luminescent reagent into a reaction container of the plurality of reaction containers held by the rotary plate;
• and
• a photodetector disposed below an opening of the rotary plate and facing a bottom surface of a reaction container of the plurality of the reaction containers held by the rotary plate, the photodetector is configured to perform luminescence measurements in a state where the light-shielded room is closed,
• wherein the light-shielded room has an insertion opening having a width allowing for insertion of the container rack and configured to be openable and closable, and
• the rotary plate configured to be turnable in a state where the light-shielded room is closed.