Sample inserting device, sample inserting system, particle size distribution measurement system, and sample inserting method

A sample inserting device configured to collect a powder sample from a sample container storing the powder sample and insert the collected powder sample into a sample introduction unit of a particle size distribution measurement device, the sample inserting device comprising:

• a movement mechanism configured to move a holding tube capable of holding the powder sample in a tip opening portion between a collection position at which the tip opening portion is inserted into the powder sample in the sample container to collect the powder sample and an insertion position at which the powder sample is inserted into the sample introduction unit;
• and
• an extrusion mechanism configured to extrude the powder sample held in the tip opening portion to outside from the tip opening portion in a state where the holding tube is at the insertion position.