Abstract: A technique to suppress retention of a mixed sample on a filter in purification of a sample is provided. A purification apparatus that purifies a specific sample from a mixed sample includes a container to separate the mixed sample with a heavy solution based on a specific gravity difference, a filter unit that collects the specific sample in the mixed sample by introduction of a supernatant discharged from the container, the specific sample being lighter in specific gravity than the heavy solution, and a discharge pipe that guides the supernatant discharged from the container to the filter unit. The filter unit includes a filter and a connection portion, the connection portion being attached to the filter and a discharge path and connecting them to each other.

Abstract: In a container, a sample is separated with a heavy solution based on a specific gravity. An overflow pipe is a pipe provided at an upper portion of the container, the overflow pipe being arranged to cause a supernatant containing a target substance separated by gravity separation in the container to overflow from the upper portion of the container. A control device controls entry and exit of the heavy solution into and from the container. The control device causes some of the supernatant produced by gravity separation to flow over the container through the overflow pipe, thereafter causes the supernatant that remains in the overflow pipe to flow back into the container, and then causes the supernatant to flow over again through the overflow pipe.

Abstract: A heavy solution is stored in a heavy solution reservoir. A sample is separated in a container based on a specific gravity difference with the use of the heavy solution supplied from the heavy solution reservoir. A waste solution from the container is discharged through a first pipe. The heavy solution from the first pipe is sent through a second pipe to the heavy solution reservoir. A filter unit is provided in the second pipe to remove a contaminant from the heavy solution discharged through the first pipe.

Abstract: A sample heating device includes a sample injection section including an inner space to which carrier gas is supplied, and a sample boat gateway opening/closing mechanism, a combustion tube, connected to the inner space, into which carrier gas flows from the inner space, a heating furnace for heating the combustion tube, a boat operation mechanism for moving a sample boat arranged inside the inner space into the combustion tube by a sample boat moving rod that is operable from outside the inner space, while maintaining air-tightness of the inner space by a sealing member, and a temperature sensor for measuring a temperature of the sample boat moving rod.