Automatic analyzer

An automatic analyzer, comprising:

• a sample dispensing system including a sample probe configured to dispense a sample located in a sample dispensing position;
• an apparatus controller configured to control the sample dispensing system;
• a pump coupled to the apparatus controller;
• a solenoid valve coupled to the apparatus controller;
• and
• a syringe coupled to the apparatus controller,
• wherein the sample probe is connected to the syringe through piping which is filled with a liquid,
• wherein the apparatus controller is configured to:
• execute interior cleaning performed on the sample probe by opening the solenoid valve and injecting the liquid into the piping by controlling the pump,
• execute a first operation sequence to operate the sample dispensing system in a standby state continued until the sample is transported to the sample dispensing position, and
• execute a second operation sequence to operate the sample dispensing system in an analysis state in which the sample located in the sample dispensing position is dispensed, and
• wherein a time period during interior cleaning performed on the sample probe in a single cycle of the first operation sequence is set to be shorter than a time period during interior cleaning performed on the sample probe in a single cycle of the second operation sequence.