Flow modulation, splitters, CFT devices
Now also available: Reversed Flow Modulation, 3 time better sensitivity!
Suitable for GCXGC FID, ECD and MSD.
As a Value Added Reseller JSB also offers Agilent Capillary Flow Technology which permits analysts to make reliable, leak-free, in-oven capillary connections that can stand up to the temperature extremes of a modern GC. The Agilent 7890A GC provides enhanced capabilities for Capillary Flow operation; Agilent data systems include user interface screens that simplify 7890A backflush setup and operation. Agilent Capillary Flow technology incorporates Deans Switches, purged splitters and quick swap devices:
- Quick Swap Accessory for vent-free removal of column without losing the MS vacuum
- Purged Effluent Splitter for inert, leak-free column effluent splitting at high temperature
- Deans Switch Device for the analysis of complex samples
- GCxGC Flow Modulator for comprehensive multi-dimensional chromatography
- Unpurged Effluent Splitter for inert, leak-free column effluent splitting when an added purge gas is not necessary
- Purged Three-way Effluent Splitter for inert, leak-free effluent splitting to three detectors
- CPM Connector for inert, leak free column connections at high temperatures
- CPM-1/16″ for inert, leak free connections requiring a SS compression fitting
Agilent Capillary Flow Technology is based on a proprietary chem-milled, diffusion-bonded process, these inert, low-mass, low-dead volume devices not only make it easy to make secure connections, but also offer the ability to precisely divert gas flow pneumatically. This assists the analyst to perform useful techniques such as backflushing, heart-cutting, flow splitting, and Deans switching.
Agilent Quick Swap Device The Agilent Quick Swap Device allows analysts to change columns or perform inlet maintenance on Agilent 5973 and 5975 MSDs with no venting or cooling. The quick swap accessory ensures the column is protected from air during inlet maintenance. Backflush mode enables increased sample throughput.
Agilent GCxGC Flow Modulator provides comprehensive multidimensional chromatography, without the need for cryogen. Provides a visualization of sample components for class determination. Comprehensive multidimensional chromatography, also called “GCxGC” offers powerful capabilities for analyzing complex mixtures such as petrochemicals, fragrances and environmental samples. In GC x GC, peak generation can be significantly greater than conventional GC. Compared to a single column separation, GC x GC can improve peak resolution and peak capacity to provide highly detailed sample characterization. Advantages of GC x GC analysis include excellent visualization of sample components, powerful technique for class determination, sample fingerprinting, and screening. Agilent’s GC x GC Flow Modulator requires no cryogen, making this technique more accessible and affordable.
Agilent Deans Switch facilitates heart-cutting by switching peaks to a second column of different stationary phase; additional selectivity can provide better resolution of trace compounds in complex matrices. In complex sample matrices, there often are too many overlapping compounds to allow resolution of the compound or compounds of interest. In these cases, additional selectivity is needed – but using selective detectors or sample preparation may be impractical or too expensive. The heart-cutting capability with the Deans Switch allows simplified, fast, and precise 2-dimensional (2-D) GC analysis. Peaks of interest from one column are “cut” onto another column having a different stationary phase. As such, compounds that might co-elute with analyte on the first column are separated from analyte on the second column.
The Purged Three-Way Splitter The Capillary Flow splitter uses the same diffusion-bonded plate technology as the Deans Switch to create an inert, easy-to-use, leak-free, high-temperature column effluent splitter. The splitter uses auxiliary electronic pneumatics control (EPC) for constant pressure makeup. The EPC purge offers the same benefits as the two-way purged splitter but with the added ability to split flow to three different detectors.
The CPM Connector offers inert, leak-free column connections at high temperatures. It is ideal for those using retention gaps or putting two columns together to make a longer column.
The CPM-1-16” SS union kit offers the same high performance as the other Capillary Flow devices but with the flexibility of an inert 1/16-inch stainless steel (SS) tube at one end of the union. The device is ideal for connecting to any other sampling device that requires a SS compression, such as a gas or liquid sampling valve.
The Unpurged Effluent Splitter is an easy-to-use, leak-free, device for reliably splitting column effluent among two or three detectors. The effluent splitter offers column effluent splitting where there is no need for a make-up gas, such as splitting to two conventional GC detectors.
Backflushing is available with any of the above purged capillary flow devices. Backflusing saves analysis time by discarding high-boiling point compounds from the column after the peaks of interest have eluted, hence decreasing cycle time. Backflushing also benefits a longer column lifetime, from reduced high temperature exposure, removal of high boiling components and protection from air and water at high temperatures. Low chemical background helps eliminate ghost peaks, carry over of late eluting compounds from previous runs and stationary phase decomposition peaks. Ultimately, there is also reduced contamination which benefits the MS ion source extending the maintenance intervals and offering an improved stability and accuracy of calibration.