| Description | Highest resolution in Evolved Gas Analysis (EGA)
GC is a high-resolution method for separating volatile and semi-volatile compounds. The gas mixtures are separated based on the differences in component distribution between a stationary phase (e.g. inner coating of a capillary) and a mobile phase (Highest resolution in Evolved Gas Analysis (EGA)
GC is a high-resolution method for separating volatile and semi-volatile compounds. The gas mixtures are separated based on the differences in component distribution between a stationary phase (e.g. inner coating of a capillary) and a mobile phase (purge gas, e.g. helium). Since this gas separation in the GC column takes a certain amount of time – the duration of which depends upon sample characteristics, column flow rate, column length, and stationary and mobile phase – it is not possible to couple directly into the GC with a continuous online sample gas flow. Our solution, therefore, was to develop a direct coupling in a quasi-continuous mode by using heated automatic valves, which allows for software-controlled gas sampling (flow-through sampling loop) and gas injection even at short intervals.
- Unique TGA/STA-GC-MS coupling solution with patented event-controlled or temperature-dependent triggering
- Cryo-trap mode to increase detection sensitivity
- Perfectly heated gas transfer (300°C) from the TGA/STA to the valve box and the injector at the GC
- Fast and wide-range QMS for analysis of the gas chromatogram
- Independent application of GC-MS for liquid/gas injection at any time
For GC-MS coupling, we rely on the world-renowned supplier, Agilent, along with our partner, Joint Analytical Systems (JAS). This allows for perfect GC-MS supply and service quality, as we at NETZSCH expect of any entity with which we do business, in order to guarantee optimized performance for our own products.
The primary scope of TGA/STA-GC-MS coupling is to detect, separate and analyze organic components.
The highly sensitive GC-MS gas detection and identification capabilities allow for improved analysis of additives, stabilizers, and residual solvents in:
- food
- pharmaceuticals
- cosmetics
- polymers
- biomass
... Read More | Unique, integrated coupling system for unlimited gas analysis
The SKIMMER® coupling system with a quadrupole mass spectrometer (QMS) is worldwide the most sensitive system for thermoanalytical gas analysis. The coupling takes place directly in the furnace of the STA 409 CD, which is especially Unique, integrated coupling system for unlimited gas analysis
The SKIMMER® coupling system with a quadrupole mass spectrometer (QMS) is worldwide the most sensitive system for thermoanalytical gas analysis. The coupling takes place directly in the furnace of the STA 409 CD, which is especially developed for the usage with the SKIMMER® coupling. The first pressure reduction stage is arranged directly above the sample container. The orifice is so designed that it works as divergent nozzle. The SKIMMER® is the second pressure reduction stage and arranged in the range of the forming compression area behind the nozzle. The distance between sample and high-vacuum component is only ca. 12 mm. As the entire system has sample temperature, condensation during gas transfer is excluded. Due to the vertical gas flow in the sample area and the short distances a complete transfer of the evolving gases is ensured. This again results in short retention times and an extremely high sensitivity.
The STA 409 CD is designed for TGA, simultaneous TGA-DSC or simultaneous TGA-DTA measurements. The TGA sample carriers can be exchanged, in a matter of seconds so that a very powerful and versatile STA is always ready.... Read More |