The 200 Series gas chromatograph from CSI now has electronic
programmed pressure control (EPPC) for the carrier gas included in the
standard package .
Usually found on
more expensive instruments, EPPC adds another
dimension to the control of separations by capillary gas
chromatography, particularly when used in conjunction with temperature
programming. Mass flow controllers do not work well at the low flow
rates used with capillary columns, and the simple pressure regulators
or needle valves used in many other low cost instruments cannot
compensate for the drop in flow rate that occurs as the column
temperature increases during a
temperature programme.
Using EPPC, the carrier gas pressure can
be increased as the temperature rises to compensate for or even reverse
this effect, cutting the elution time of strongly retained components
and improving analytical
sensitivity.
When EPPC is used with CSI's download software, it
is possible to use the GC in "simulated constant flow" mode, where the
system calculates the pressure programme necessary to produce constant
carrier gas velocity throughout a
temperature programmed run.
The 200 series Gas Chromatograph with its patented flow through technology is now well established at providing excellent chromatographic performance and reliability at realistic prices.
Each GC is a dedicated single channel unit with Split / Split-less injector and Programmable Pressure Control as standard and a choice of three detector options.
Flame Ionisation, Thermal conductivity and Electron Capture Detectors can cover most of the analytical applications in industry today. Manual or automatic gas sampling valves can also be fitted to the 200 series GC.
With the 205 auto-sampler, Chromstar download software and Clarity Integration systems CSI can offer the complete integrated package to solve your analytical requirements.
The basic 200 Series instrument is smaller, lighter
and uses less power (800VA) than any other instrument in its class due
to its unique, patented oven design.
All CSI products are designed and manufactured at our base near Ely in the UK.
