A system and method for utilizing a carbide-derived carbon (CDC) fiber in solid-phase micro extraction. Optically pumping the carbide-derived carbon (CDC) fiber, as compared to using thermal desorption, enhances performance of the system. CDC provides for a broad based sorbent that is insensitive to high humidity. Optical pumping may be done axially or radially on a modified gas chromatography needle. In some cases, staged, or pulsed, optical pumping is used to drive off solvent or other lower boiling compounds first and then the desorption of the remaining analytes is cleaner and the instrumentation is less likely to be overloaded.

The auto-sampler for chromatographs includes a needle for sampling configured to move while a tip end thereof faces vertically downward; a switching valve having a plurality of ports to which channels constituting a chromatograph are connected, the switching valve switching between port connecting conditions to switch between channel configurations; and an injection port including an opening at an upper surface thereof through which a tip end of the needle is inserted to make the needle fluidically communicate with a pipe connected to one port of the switching valve, and a needle seal configured to get into contact with an outer circumferential surface of the tip end portion to make the needle fluidically communicate with the pipe in a liquid-tight manner when the tip end of the needle is inserted through the opening.

The auto-sampler for chromatographs includes a needle for sampling configured to move while a tip end thereof faces vertically downward; a switching valve having a plurality of ports to which channels constituting a chromatograph are connected, the switching valve switching between port connecting conditions to switch between channel configurations; and an injection port including an opening at an upper surface thereof through which a tip end of the needle is inserted to make the needle fluidically communicate with a pipe connected to one port of the switching valve, and a needle seal configured to get into contact with an outer circumferential surface of the tip end portion to make the needle fluidically communicate with the pipe in a liquid-tight manner when the tip end of the needle is inserted through the opening.

A method for preparing a sample for chromatographic separation processes, in which a sample vessel is partially filled with a substance to be examined and is closed, is described. The substance to be examined is subjected to a thermo-chemical reaction in which at least one sample component is converted into another substance, and in which by use of a removing device samples are removed from the sample vessel for analytical examination. Also, the sample vessel forms a cavity, into which the substance to be examined is introduced as a core and a heating section for indirect heat transfer is applied along the filling of substance to be examined.

A method for preparing a sample for chromatographic separation processes, in which a sample vessel is partially filled with a substance to be examined and is closed, is described. The substance to be examined is subjected to a thermo-chemical reaction in which at least one sample component is converted into another substance, and in which by use of a removing device samples are removed from the sample vessel for analytical examination. Also, the sample vessel forms a cavity, into which the substance to be examined is introduced as a core and a heating section for indirect heat transfer is applied along the filling of substance to be examined.

A disposable chromatography sample introduction device includes a stylus with a holder and a tubular stem extending from one end of the holder containing porous sample-holding material. The stylus has a pair of spaced openings permitting fluid flow therethrough. An injector housing includes an insertion port for receiving the stylus, a seal, an inlet port for communicating with one stylus opening, and an outlet port for communicating with the other stylus opening. When the stem is immersed in a sample, sample enters the stem by capillary action. Thereafter, the stylus is inserted into the housing insertion port where mobile phase flowing from inlet port to outlet port passes through the stem extracting sample. The holder has a finger grip and an external thread that engages a complementary injector housing thread to secure the holder when the stylus is inserted therein.

A disposable chromatography sample introduction device includes a stylus with a holder and a tubular stem extending from one end of the holder containing porous sample-holding material. The stylus has a pair of spaced openings permitting fluid flow therethrough. An injector housing includes an insertion port for receiving the stylus, a seal, an inlet port for communicating with one stylus opening, and an outlet port for communicating with the other stylus opening. When the stem is immersed in a sample, sample enters the stem by capillary action. Thereafter, the stylus is inserted into the housing insertion port where mobile phase flowing from inlet port to outlet port passes through the stem extracting sample. The holder has a finger grip and an external thread that engages a complementary injector housing thread to secure the holder when the stylus is inserted therein.

A housing is provided with an internal space for accommodating an insert and a cylindrical cap attachment part provided, at the distal end surface thereof, with an opening part communicating with the internal space. An inclined groove that is inclined from the distal end side to the proximal end side of the cap attachment part along the circumferential direction of the cap attachment part is provided on the outer circumferential surface of the cap attachment part. A cap fixing part for attaching a seal cap to the cap attachment part has a cap holding part for holding the outer peripheral surface of the seal cap and an elastic part connected to the cap holding part. The elastic part is provided with a protrusion that is fit into the inclined groove of the outer peripheral surface of the cap attachment part.

A sample vaporization chamber for gas chromatograph includes a cylindrical insert provided, at least on a lower end side of an inner peripheral surface or an outer peripheral surface thereof, with a first threaded portion, and an insert fixing portion provided with a second threaded portion to be threaded with the first threaded portion in the inner space of the housing. The insert fixing portion is configured to fix the insert in the inner space of the housing in a state in which the insert is accommodated in the inner space by threading the first threaded portion of the insert inserted in the inner space through the opening with the second threaded portion.

A sample vaporization chamber for gas chromatograph includes a cylindrical insert provided, at least on a lower end side of an inner peripheral surface or an outer peripheral surface thereof, with a first threaded portion, and an insert fixing portion provided with a second threaded portion to be threaded with the first threaded portion in the inner space of the housing. The insert fixing portion is configured to fix the insert in the inner space of the housing in a state in which the insert is accommodated in the inner space by threading the first threaded portion of the insert inserted in the inner space through the opening with the second threaded portion.