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Heated Adsorbent Traps - SRI Instruments
Heated Adsorbent Traps
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Dual setpoints for adsorption & desorption temperatures
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Preconcentrates molecules between C
3
and C
15
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Single or dual independently heated traps
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Requires a 10 port valve & valve oven
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Adsorbent packing of your choice
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PeakSimple control
ADSORBENTS:
Carbosieve II MoleSieve 13X
Carbopack B Silica Gel
HayeSep-D Tenax-GR
Heated adsorbent traps are a simple and economical way to preconcentrate samples for the GC. A heated trap consists of
a stainless steel tube packed with adsorbent. While sample is drawn through the tube, analytes of interest are trapped on
the adsorbent bed. Then, the trap is heated and the valve rotated to desorb the analytes into the carrier gas stream,
which deposits them in the analytical column for separation prior to reaching the detector.
Each SRI trap is plumbed as a sample loop of a 10-port gas
sampling valve. A valve and heated valve oven must be
ordered along with a heated trap. SRI heated traps are installed
in the ducts of the valve oven on the left-hand side of an SRI
GC.
Top view of an SRI heated trap
:
Choose one or two independently heated traps packed with
your choice of adsorbent. Rather than using multiple adsorbents
with different affinities and desorption temperatures in a single
trap, SRI uses a unique dual trap system for simultaneous
trapping and desorption of dissimilar analytes. Dual heated
traps are an integral part of the SRI Purge and Trap and the TO-
14 Air Concentrator. For most applications, dual heated traps
still require just one 10-port gas sampling valve.
8690-0084 Heated/fast cooling adsorbent trap, for existing valve
$ 1,539.00
8690-2084 Dual heated/fast cooling adsorbent traps, as above
$ 3,079.00
8690-0065 10 port electrically actuated valve, plumbed & tested
$ 2,059.00
8690-0088 Thermostatted valve oven, mounted on an 8610C GC
$ 819.00
8690-0091 Narrow heated thermostatted valve oven, for special
applications
$ 819.00
Heated Adsorbent Traps
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