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Enrichment Coils - SRI Instruments
Enrichment Coils
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For nonchromatographic Stream Monitoring Applications
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Thermal Modulation of gas samples for Lower Detection limits
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Fit up to 4 Enrichment Coils in an 8610C Column Oven or on a Model 110 Detector Chassis
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 unti lit 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.
8690-0091
Enrichment Coil
$ 995.00
Enrichment Coils
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