GERSTEL systems are optimized for performance and throughput in every step of the SPME process. Up to 128 samples placed in standard Headspace vials can be analyzed in one batch.
Sample agitation with stir bars accelerates the extraction process and improves throughput. Mechanical fiber stress is reduced, leading to longer fiber life expectancy and improved instrument up-time. The PrepAhead function allows samples to be prepared in advance while the GC run is ongoing for improved throughput and system utilization. In addition, samples can be heated or cooled during storage and extraction, which is highly useful, for example, for fresh food samples.
The Cooled Injection System (CIS) is a PTV-type GC inlet, perfectly suited for SPME analysis. The narrow-bore inlet liner ensures highly efficient analyte transfer to the GC/MS for best possible detection limits and separation efficiency. The patented Septum-Less Head (SLH greatly reduces mechanical stress on the SPME fiber, extending its life expectancy. Septum coring and background peaks from septum material are eliminated, leading to better limits of detection and programmed heating helps ensure that analytes are introduced to the GC without thermal breakdown.
Efficient integrated control software:
MAESTRO software supports a wide range of techniques including SPME. The PrepAhead function optimizes productivity and throughput: Samples are prepared just in time in parallel to the GC/MS run. Every sample is introduced exactly when the analysis system becomes ready for best possible system utilization and sample throughput. Priority samples can be inserted without halting the sequence. MAESTRO can be operated independently or integrated with the Agilent Technologies ChemStation. Just one method and one sequence table runs the complete system from SPME to GC/MS analysis.
Visibility and overview:
The MAESTRO Scheduler provides a graphical overview of SPME steps and the total analysis time for the entire batch of samples, making it easy to plan your laboratory work. The effect of any change to the method on productivity is immediately seen on the display, making it easier to optimize throughput. Several user support functions are included: Context sensitive on-line help for easy set-up and log functions for traceability and trouble-shooting. Remote viewing software enables more efficient support by the GERSTEL hot-line.
Multi-Fiber Exchange (MFX) flexibility:
The GERSTEL Multi Fiber Exchanger MFX is a unique automated fiber exchange option for the GERSTEL MPS. Using MFX, automated SPME analysis of a sample can now be performed using fibers with different polarity, covering a wide range of analytes and extracting the maximum amount of information. MFX is available with a 25-fiber option for analysis of fibers that are used for remote sampling.
Using the MPS, a derivatization reagent can be added to the fiber prior to or following the extraction step. These tasks are simply selected by mouse-click in the MAESTRO software.
Automated conditioning in the CIS or in the MPS bake-out station ensures that the fiber is always clean and ready for the next sample. Well conditioned SPME fibers provide best possible analysis results and best limits of detection.