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BUCK Scientific Enrichment Coil Accessory
Note: For all International Orders, the buyer will be solely responsible for the customs clearance, duty, and taxes imposed on the package.
Enrichment Coils use thermal modulation to enrich gas samples for quantifiable peaks. Consisting of a length of resistively heated wide bore capillary column, they can be used in a GC column oven or on a Model 110 detector chassis for nonchromatographic stream monitoring applications. Thermal modulation causes many analytes like toluene to adsorb on the enrichment coil until it is saturated and reaches equilibrium, usually a matter of seconds. Upon heating, the analytes desorb from the enrichment coil, producing a peak which can be easily measured, rather than a barely discernible shift in baseline level.
The chromatograms below show a nonchromatographic monitoring of a gas stream. In the first chromatogram, a slight baseline shift is the only clue that the concentration of the stream has changed. With the enrichment coil, the shift between 1ppm and 2ppm concentrations becomes obvious.