Sample analyzer and reagent container

A sample analyzer comprising:

• a measurement sample preparator comprising a sample aspiration tube configured to aspirate a sample from a sample container and a reagent aspiration tube configured to aspirate a reagent from a reagent container, the measurement sample preparator configured to prepare a measurement sample from the sample aspirated by the sample aspiration tube and the reagent aspirated by the reagent aspiration tube;
• a detector configured to detect signals corresponding to analytes in the measurement sample;
• a controller comprising a processor, the controller configured to analyze the signals detected by the detector;
• and
• a reagent container holder configured to hold the reagent container inserted therein, wherein the reagent container includes:
• a reagent storage bag configured to contain the reagent, the reagent storage bag being made of flexible material and having an opening that allows the reagent aspiration tube to enter the reagent storage bag, and
• a sealing plug configured to seal the opening, the sealing plug being penetrable by the reagent aspiration tube, and
• the sample analyzer further comprises:
• a pressing part configured to press the reagent storage bag from an outside in a state where the reagent storage bag is in the reagent container holder and the opening is sealed by the sealing plug.