Abstract:
The invention relates to an apparatus with a furnace for the thermal treatment of gases, a gas chromatograph, or some other device for separating gaseous constituents, arranged upstream and/or downstream of the furnace, and with a connection between two capillaries, which are provided for the onward transfer of an analyte in the gas phase, wherein one of the two capillaries is a reactor tube arranged in the furnace. According to the invention, the two capillaries are connected to each other in a permanently gastight manner by bonding, adhesion, soldering or pressing.
Abstract:
The invention relates to a method for the analysis of isotope ratios. According to said method, at least one sample gas and/or at least one reference gas are supplied to at least one analytical device via an open split, the supply of a carrier gas also being possible. The invention is characterized in that the concentration of the sample gas and/or the reference gas supplied to the analytical device is controlled by the supply of the respective carrier gas, or by the direct supply of the sample gas to the analytical device. The invention also relates to a device for supplying gases to at least one analytical device, comprising two or more capillaries for sample gases, said capillaries having respective drives for the displacement between the mixing zone and the waiting zone.
Abstract:
The invention relates to a pharmaceutical, therapeutic system in the form of a plaster, containing highly volatile active ingredients as active components in a membrane system. A covering layer is embodied as a reversible composite produced by sealing an approximately active ingredient impermeable polyester against an active ingredient polymer membrane. The approximately active ingredient impermeable polyester film can be removed before use.
Abstract:
The invention relates to an apparatus having an analyser and having a device for providing gases for an analysis, in particular for determining isotopic ratios, wherein the analyser is connected downstream of the device, wherein the device for providing the gases has a first gas path (16) for a gas stream, a second gas path (23) and a first reactor (18) between the two gas paths, and wherein the first reactor (18) has an inlet side and an outlet side and the inlet side of the first reactor (18) faces the first gas path (16). The invention provides at least one second reactor (19) which is arranged parallel to, or in series with, the first reactor (18), wherein at least one of the reactors can be deactivated, or means are provided for circumventing at least one of the reactors.