Auto-sampler for chromatographs

A chromatograph comprising:

• a sampling needle having a tip end and a base end, the sampling needle being configured to suck sample through the tip end;
• a pipe in fluid connection with the base end of the sampling needle;
• and
• a connecting mechanism configured to fluidically connect the sampling needle and the pipe, the connecting mechanism including a first component fixed to one of the sampling needle and the pipe, a second component fixed to the other of the sampling needle and the pipe, and a fixing component configured to fix the first component and the second component using screwing of screws, wherein
• the first component includes a first seal surface on which an end surface of said one of the sampling needle and the pipe protrudes from or is disposed on the same plane of the first seal surface,
• the second component includes a second seal surface facing the first seal surface, an end surface of said other of the sampling needle and the pipe protrudes from or is disposed within the same plane of the second seal surface, and
• the connecting mechanism includes a packing interposed between the first seal surface of the first component and the second seal surface of the second component, and the connecting mechanism fixes the first component and the second component by using the fixing component while the end surface of the sampling needle and the end surface of the pipe are in contact with the packing.

An auto-sampler for chromatographs configured to inject sample into an analysis channel for chromatography, comprising:

• a sampling needle including a tip end and a base end, the sampling needle being configured to suck the sample through the tip end;
• a pipe in fluid connection with the base end of the sampling needle;
• and
• a connecting mechanism configured to fluidically connect the sampling needle and the pipe, the connecting mechanism including a first component fixed to one of the sampling needle and the pipe, a second component fixed to the other of the sampling needle and the pipe, and a fixing component configured to fix the first component and the second component using screwing of screws, wherein
• the first component includes a first seal surface from which an end surface of said one of the sampling needle and the pipe protrudes from or is disposed within the same plane of the first seal surface, and the second component includes a second seal surface facing the first seal surface, and an end surface of said other of the sampling needle and the pipe protrudes from or is disposed within the same plane of the second seal surface, and
• the connecting mechanism includes a packing interposed between the first seal surface of the first component and the second seal surface of the second component, and the fixing component fixes the first component and the second component while the end surface of the sampling needle and the end surface of the pipe are in contact with the packing.