A control method for an automatic analyzer that can improve robustness, throughput, and measurement accuracy. The automatic analyzer includes a sample loop connected between two sample ports of a plurality of sample ports of a switch valve. The method includes the steps of: adjusting a drive parameter of the syringe corresponding to a viscosity of the sample acquired in advance; switching the switch valve to a first state in which the sipper and the syringe contact with each other without through the sample loop; driving the syringe based on the drive parameter to draw and introduce the sample through the sipper; switching the switch valve to a second state in which the syringe and the sample loop conduct with each other; and driving the syringe based on the drive parameter to introduce the sample into the sample loop.

An air measurement method of performing measurement by injecting air into a gas chromatograph includes a liquid suction step of sucking a liquid that does not interfere with detection of a predetermined component in air by a gas chromatograph into a syringe to fill the syringe with the liquid, an air suction step of sucking a predetermined amount of air into the syringe after the liquid suction step, an injection step of injecting the predetermined amount of air sucked into the syringe into the gas chromatograph after the air suction step, and a recording step of acquiring a detection signal for the air injected into the gas chromatograph in the injection step and recording an acquired detection signal in association with the air injection amount into the gas chromatograph.

An air measurement method of performing measurement by injecting air into a gas chromatograph includes a liquid suction step of sucking a liquid that does not interfere with detection of a predetermined component in air by a gas chromatograph into a syringe to fill the syringe with the liquid, an air suction step of sucking a predetermined amount of air into the syringe after the liquid suction step, an injection step of injecting the predetermined amount of air sucked into the syringe into the gas chromatograph after the air suction step, and a recording step of acquiring a detection signal for the air injected into the gas chromatograph in the injection step and recording an acquired detection signal in association with the air injection amount into the gas chromatograph.

Certain aspects of the present disclosure may include an inlet for a gas chromatography system, including a septum plunger configured to: receive a sample material including a solvent and an analyte; and prevent the received sample material from being exposed to an environment outside the inlet; a liner configured to: be disposed in a stem of the inlet making a tight connection with the column; and receive the sample material via the septum plunger; the stem configured to be disposed inside a heater block; and the heater block including: an angled ventilation port; a plurality of air holes; an stem opening configured to receive the stem; a heater opening configured to receive a heater; and a sensor opening configured to receive a temperature sensor.

Certain aspects of the present disclosure may include an inlet for a gas chromatography system, including a septum plunger configured to: receive a sample material including a solvent and an analyte; and prevent the received sample material from being exposed to an environment outside the inlet; a liner configured to: be disposed in a stem of the inlet making a tight connection with the column; and receive the sample material via the septum plunger; the stem configured to be disposed inside a heater block; and the heater block including: an angled ventilation port; a plurality of air holes; an stem opening configured to receive the stem; a heater opening configured to receive a heater; and a sensor opening configured to receive a temperature sensor.

A sample vaporization unit configured for vaporizing a sample injected from a syringe needle while supplying a carrier gas into a column is provided with a pipe, a heat conductive member, and a heater. The column is inserted into the pipe. The heat conductive member is provided along the outer circumference of the pipe. The heater is provided along the outer circumference of the heat conductive member. The heat conductive member is in line contact with the pipe along the axial direction in which the column extends at a plurality of circumferential locations on the outer circumferential surface of the pipe.

A sample vaporization unit configured for vaporizing a sample injected from a syringe needle while supplying a carrier gas into a column is provided with a pipe, a heat conductive member, and a heater. The column is inserted into the pipe. The heat conductive member is provided along the outer circumference of the pipe. The heater is provided along the outer circumference of the heat conductive member. The heat conductive member is in line contact with the pipe along the axial direction in which the column extends at a plurality of circumferential locations on the outer circumferential surface of the pipe.