C7
AutoDesorb
TM
Scientific Instrument Services, Inc.
TM
FAX: 908-806-6631
www.sisweb.com/catalog/08/C7
The AutoDesorb System
T
he AutoDesorb System uses the SIS patented "Short
PathTM Thermal Desorption" technology. This "short
path" provides for the highest sensitivity of analysis. The
Short Path Thermal Desorption technique enables the analysis of a
wide diversity of samples via several thermal desorption sampling
techniques. Both the Purge & Trap technique and Direct Thermal
Extraction technique can be used for the analysis of volatile as well
as semi-volatile organics.
The Short Path Thermal Desorption Technology provides several
unique advantages over other desorption systems:
First:
It enables the sample, which is trapped on an adsorbent
media contained in a glass lined stainless steel tube (GLT desorp-
tion tube), to be subjected to rapid (ballistic) heating. The
AutoDesorb System can desorb samples at temperatures up to
450° C and at ramp rates up to 100° C. Desorption times and other
timers can be set from 1 second to 99 minutes. Multi-step desorp-
tion heater ramping with hold times can also be programmed
Second:
The desorbed component can be easily and efficiently
transferred into the injection port of the gas chromatograph from a
glass lined stainless steel sample tube and its associated injection
needle. This provides for a short transfer path for the sample in an
inert environment to minimize the degradation of labile sample
components which often decompose upon contact with the hot cat-
alytic metal wall surfaces of the transfer path of other systems.
Third:
Each sample has its own individual adsorbent trap tube
and needle to eliminate the possibility of cross-contamination from
sample to sample, thus preventing any "memory effect" due to
overloading of the sample in the GLT desorption tube or due to
residues from previous samples.
Fourth:
The new automated system permits the unattended
analysis of multiple samples, thereby increasing the productivity of
the laboratory
Fifth:
The "short path" thermal desorption technology provides
the most versatile techniques for the analysis of a wide range of
volatile and semi-volatile organics from gas, liquid and solid matrix
samples.
Complete AutoDesorb System and it components mounted on an Agilent GC/MS
AutoDesorb System mounted on the Agilent 6890 GC and 5973 MSD
AutoDesorb Tower
12 Tube
Carousel
PC Controls the
AutoDesorbTM
AutoDesorbTM
Electronics
Console
Capillary Column
Cryo-
Trap
TM
GC/MS
Interface
SIS AutoDesorb
TM
System
Automated Short Path Thermal Desorption
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