A twist-lock compliant needle including a housing component surrounding a needle holder holding a rigidly mounted needle, the housing component including a biasing element disposed therein, wherein the biasing element compresses as a needle tip of the needle contacts a surface is provided. An associated method is also provided.

A twist-lock compliant needle including a housing component surrounding a needle holder holding a rigidly mounted needle, the housing component including a biasing element disposed therein, wherein the biasing element compresses as a needle tip of the needle contacts a surface is provided. An associated method is also provided.

A gas chromatograph includes a sample introduction portion and a heater block. A contact portion is fit into a first recess of a main body of the sample introduction portion. The heater block is fixed to and positioned with respect to the main body of the sample introduction portion by directly coming into contact with the contact portion provided on the main body of the sample introduction portion. For this reason, the heater block may be surely positioned with respect to the sample introduction portion. In addition, the heater block may be positioned without providing a member such that heat from the heater block is transferred to the outside and lost, and thus the sample introduction portion may be efficiently heated.

A gas chromatograph includes a sample introduction portion and a heater block. A contact portion is fit into a first recess of a main body of the sample introduction portion. The heater block is fixed to and positioned with respect to the main body of the sample introduction portion by directly coming into contact with the contact portion provided on the main body of the sample introduction portion. For this reason, the heater block may be surely positioned with respect to the sample introduction portion. In addition, the heater block may be positioned without providing a member such that heat from the heater block is transferred to the outside and lost, and thus the sample introduction portion may be efficiently heated.

A member coupling mechanism capable of coupling two members using a necessary tightening force even in a limited space by a small and simple configuration. A member coupling mechanism includes a first member including a member coupling portion having an open apical surface, a second member coupled to the member coupling portion of the first member, an elastic sealing member inserted between the first member and the second member to seal an opening of the apical surface of the member coupling portion, a coupling member that couples the first member and the second member together, and an acting portion that exerts a force on the coupling member.

In a sample injection device (100), a controller (23) is configured or programmed to control a syringe drive (21) such that in a penetration operation in which a syringe (10) is moved to a side of a sample introduction portion (910) and a needle (11) penetrates a lid member (911), a moving speed at a time when a tip (11b) of the needle contacts the lid member is a second moving speed that is low.

In a sample injection device (100), a controller (23) is configured or programmed to control a syringe drive (21) such that in a penetration operation in which a syringe (10) is moved to a side of a sample introduction portion (910) and a needle (11) penetrates a lid member (911), a moving speed at a time when a tip (11b) of the needle contacts the lid member is a second moving speed that is low.

A flow path washing method and apparatus for an auto sampler in which, when a cleaning fluid supplied to a flow path which is switched between a first flow path including a nozzle for aspirating a sample and a sample loop for holding the aspirated sample, and a second flow path including a washing tub for washing at least an outer wall of the nozzle, a control unit changes a flow velocity of the cleaning fluid supplied between measurement of a first measurement item and measurement of a second measurement item based on washing information showing washing patterns corresponding to measurement items of the sample, including at least one of first washing information showing a washing pattern corresponding to the first measurement item of the sample and second washing information showing a washing pattern corresponding to the second measurement item to be measured subsequent to the first measurement item.

Embodiments of the disclosure relate to chemical analysis systems, including autosampler systems. In some embodiments, an autosampler system can analyze gas phase samples using a single inlet for better consistency. The autosampler system can move the sample container closer to the sample introduction/preconcentration system prior to accessing the contents of the container to reduce exposure of the sample to reactive surfaces. The autosampler system is able to couple the sample containers to a sampling wand automatically, thereby eliminating the need to pre-attach each container using a gas transfer line. The autosampler system can be disposed on top of a chemical analysis system (e.g., a GC or GCMS), thereby conserving laboratory bench space. In some embodiments, the modules (e.g., sample trays, thermal conditioning systems, support legs) of the autosampler system can be coupled to the autosampler system using clamps that include magnetic codes associated with autocalibration information.

Embodiments of the disclosure relate to chemical analysis systems, including autosampler systems. In some embodiments, an autosampler system can analyze gas phase samples using a single inlet for better consistency. The autosampler system can move the sample container closer to the sample introduction/preconcentration system prior to accessing the contents of the container to reduce exposure of the sample to reactive surfaces. The autosampler system is able to couple the sample containers to a sampling wand automatically, thereby eliminating the need to pre-attach each container using a gas transfer line. The autosampler system can be disposed on top of a chemical analysis system (e.g., a GC or GCMS), thereby conserving laboratory bench space. In some embodiments, the modules (e.g., sample trays, thermal conditioning systems, support legs) of the autosampler system can be coupled to the autosampler system using clamps that include magnetic codes associated with autocalibration information.