Abstract: A sampler device for gas chromatography includes a first unit that supports and moves a second, single instrument holding unit carrying at least two instruments with respective control plungers for taking/inserting samples to be analyzed, and a third unit that actuates the plungers simultaneously. The first unit is mounted on a base and moves the second and third units along horizontal and vertical directions and between a first and a second station, at least one of which is defined beyond the plan encumbrance of the base. A control unit automatically controls the movement of the first unit between the first station, with the third unit controlled by the control unit to simultaneously take the samples to be analyzed by the two instruments, and the second station, with the third unit controlled by the control unit to simultaneously insert the previously taken samples within two distinct injectors of a gas chromatograph.

Abstract: A thermal modulator for gas chromatography includes an analytical capillary to be traversed by analytes and that is interposed between two gas chromatographic columns; a cooling system having a cold zone, a support element associated with the cold zone and supporting a portion of the analytical capillary at a corresponding or slightly higher temperature than the cold zone, so as to define a trapping portion of the analytes; a control system, which selectively controls the emission of pulsed current to electrically conductive elements associated with the analytical capillary to heat the trapping portion and cause the release or desorption of previously immobilized analytes; and a heating system of a portion of the analytical capillary, positioned outside of the support element and upstream of the support element, so as to generate a rapid expansion of the gas contained in the portion and facilitate the advancement of the released or desorbed analytes.

Abstract: A sampler device for gas chromatography includes a first unit that supports and moves a second, single instrument holding unit carrying at least two instruments with respective control plungers for taking/inserting samples to be analyzed, and a third unit that actuates the plungers simultaneously. The first unit is mounted on a base and moves the second and third units along horizontal and vertical directions and between a first and a second station, at least one of which is defined beyond the plan encumbrance of the base. A control unit automatically controls the movement of the first unit between the first station, with the third unit controlled by the control unit to simultaneously take the samples to be analyzed by the two instruments, and the second station, with the third unit controlled by the control unit to simultaneously insert the previously taken samples within two distinct injectors of a gas chromatograph.