Temperature regulating container

Provided is a temperature regulating container whereby the states of multiple samples can be optically measured in real time while regulating the temperature of the samples and the samples can be moved at high speed by, for example, shaking without requiring a complicated mechanism. A cell culture container provided with a combination of three kinds of members, i.e., a temperature regulating liquid-holding member (110), a sample-holding member (120) and a lid (130). Owing to this combination, the cell culture container enables that: multiple samples (140) are contacted with a temperature regulating liquid (141) so that the temperature of the samples (140) can be increased at high speed and a uniform temperature can be maintained; the lid (130), said lid being disposed so as to be in contact with the surface of the samples (140), prevents the samples (140) from drying and contamination and, at the same time, prevents dew formation on an optical path for performing optical measurement; the ...