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Advanced Flow Technology




       Advanced Flow Technology for Enhanced  Productivity and Confident Identification




         Backflush System                                                                                                          AFT Software

         The backflush system reverses the carrier gas flow               Normal Analysis      Unnecessary component               The Intuitive and easy-to-use Advanced Flow Technology Software is included with each AFT system. Both the
         after the target compounds have eluted, to discharge                   Target Component                                   backflushing and detector splitting systems are controlled with this software.
         residual late eluting components in the column through
         the injection port split vent.
         Backflush shortens the analysis time and improves
         productivity. In addition, high-boiling point
         components are discharged efficiently to reduce the                                                                                    Diethylbenzene
                                                                          Backflush Analysis                                                                   Chromatogram without backflushing
         bakeout time (elution time), and thus prevent column                         Backflush                                            Styrene  (IS)
         deterioration, contamination, and retention time shifts.                        Start


                                                                                                                                                               Analysis time 75 minutes
                                                                                           Analysis time shortened!
                                                                                0            10           20 t(min.)                           Backflushing: 6.5 minutes
         Detector Splitting System
                                                                                                                                                               Chromatogram with backflushing
         Compounds eluting from an analytical column may be    For analysis of natural products such as flavor
                                                                                                                                        Analysis time: 18.5 minutes
         split to multiple detectors to obtain multiple        compounds, it is efficient to use a combination of FID and
                                                                                                                                                               Blank run after backflushing
         chromatograms. Offering abundant information in a single  MS.  FID has a wide dynamic range for quantitative
         analysis, this system saves time and money. In addition,   analysis, while MS has unmatched capability for                            10        20       30        40       50        60        70 min
         with concurrent use of selective detectors, confidence in   qualitative identification. Using the detector splitting         Analysis of Volatile Compounds in Polystyrene
         peak identity is improved. We recommend this system to   system, a TIC (Total Ion Chromatogram) and an FID
                                                                                                                                      Backflushing was started 12 minutes after target substances were eluted.  Analysis time, including the time for
         GCMS users wanting to confirm compound classes using  chromatogram of the same pattern can be obtained
                                                                                                                                      discharging unwanted substances, could be reduced from 75 minutes to 18.5 minutes.
         detector selectivity.                                 simultaneously with one analysis.




                                                                                         Qualitative analysis by MS














                                                       Difference of                     Quantitative analysis by FID:
                                                       R. T.: 0.003 min                  Wide quantitation response range
                     Difference of  Difference of
                     R. T.: 0.000 min  R. T.: 0.002 min




                                                                                                                                      Advanced Flow Technology software download site
                                                                                                                                      http://www.shimadzu.com/products/lab/gc/index.html







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