Basic HTML Version
Peltier Cryocooling Accessory for GC - SRI Instruments
CryoCooled Peltier Trap
70
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Sample from source, Tedlar bags,
cannisters or ambient air
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Vacuum pump with data system controlled
interface
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Independently heated dual trap design
(optional)
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PeakSimple control
The CryoCooled Peltier Trap can cool samples down to -15
°
C. It is designed for use with analytes that do not trap well
but can enrich in cold temperatures, such as some sulfur compounds. The trap is filled with Tenax-GR and silica
gel adsorbents. A vacuum pump is included for drawing samples through the CryoCooled Peltier Trap. The
CryoCooled Peltier Trap has its own power supply, separate from the main GC power.
The CryoCooled Peltier Trap is basically a heated trap sandwiched between two Peltier coolers. The CryoCooled Peltier
Trap also requires a 10-port gas sampling valve (sold separately). While the Peltier Trap is enriching the sample, the 10-
port valve is in the LOAD position. At the conclusion of the sampling period, the trap is heated to 150-200
°
C and the valve
is rotated to the INJECT position; this places the trap in the carrier gas stream and sweeps the enriched analytes into
the column.
The chromatogram at left
shows the SRI FPD
response to 10ppb hydrogen
sulfide (H
2
S) as enriched by
the CryoCooler at -10
°
C.
8690-0090 CryoCooled Peltier Trap
$ 3,089.00
8690-0086 CryoCooled Peltier upgrade for existing heated trap
$ 1,539.00
8690-0065 10-port electrically actuated valve, plumbed & tested
$ 2,059.00
8690-0088 Heated thermostatted valve oven mounted on an 8610C GC $ 819.00