Micro Cryo-Trap
TM
D26
Scientific Instrument Services, Inc.
TM
Phone: 908-788-5550
www.sisweb.com/catalog/08/D26
Micro Cryo-Trap
T
wo models of the Micro Cryo-Trap are now available.
The Model 971 is designed for liquid CO
2
for cryo-
trapping temperatures down to -70°C. The Model 981
is designed for Liquid Nitrogen for cryo-trapping temperatures
down to -180°C. Each model can maintain any cooling
temperature within ± 3°C from its minimum temperature up to
room temperature. In order to release the trapped volatiles from
the Micro Cryo-TrapsTM, both models can heat the Micro Cryo-
TrapTM at temperatures up to 400°C at a heating ramp rate in
excess of 400°C/minute. Most users prefer to use the CO
2
version of the Micro Cryo-Trap (Model 971) due to the ease of
handling liquid CO
2
and for applications where -70°C is an
acceptable lower temperature limit.
If lower temperatures are required, then the liquid nitrogen
version of the Micro Cryo-Trap (Model 981) must be used. The
liquid nitrogen delivery lines are larger than the CO
2
lines and the
liquid nitrogen lines must be insulated. This makes installation
somewhat more cumbersome. In addition the Liquid Nitrogen
version uses more cooling gas and is slightly more audible.
Depending on the make and model of your GC, a Micro Cryo
Trap can be ordered as described below. First you must decide
which model of Micro Cryo-Trap is required for your application;
the Model 971 for use with CO
2
, or the Model 981 for use with
liquid Nitrogen. Although the Cryo-Trap can be used for both CO
2
and LN
2
, the electronics are not interchangeable for the two
systems.
You must then select which installation kit is required based
on the make and model of your gas chromatograph. Either of the
two Micro Cryo-Trap models will fit the same installation kits
listed.
Model 971 Micro Cryo-Trap for use with Liquid C0
2
The Model 971 Micro Cryo-TrapTM is designed for use with liquid
CO
2
tanks with a DIP tube. The minimum cooling temperature is
-70°C. This model comes with the Micro Cryo-TrapTM, the dual
temperature electronics controller, connecting cables and stainless
steel connecting line.
Model 981 Micro Cryo-Trapfor use with Liquid Nitrogen
The Model 981 Micro Cryo-TrapTM is designed for use with liquid
nitrogen tanks (low pressure). The minimum cooling temperature is
-180°C. This model comes with the Micro Cryo-TrapTM, the dual
temperature electronics controller, connecting cables and a copper
connecting line.
Cryo-Trap Installation Packages
Depending on the make and model of Gas Chromatograph one of
the installation packages must be ordered for the installation of the
GC Cryo-Trap.The Cryo-Trap installation kits include the relays,
mounting hardware, cables and other parts required to mount the
Cryo-Trap into the particular model of gas chromatograph.
GC Septa
GC Injection Port
GC Injection
Port Liner
Vespel Insulator
Injection Port Clamp
Injection Port Nut
Heater Coil
Thermocouple
Cooling Gas IN
Cooling Chamber
Capillary Column
Cryo-Trap Controller
GC Injection Port
Megabore Guard Column
Cooling Gas
GC Oven
Capillary Union
GC Capillary
Column
GC Cryo-Trap
-60° C
Part No.*
Description
Model 971 Micro Cryo-TrapTM
for use with liquid CO
2
, Electronics
Controller, connecting cables, and
stainless steel connecting lines
*Order installation kit below.
Part No.*
Description
Model 981 Micro Cryo-TrapTM
for use with liquid LN
2
, Electronics
Controller, connecting cables, HP
relay switch and copper connecting lines
*Order installation kit below.
Part No.*
Description
Cryo-Trap Install Kit for HP 5890A
Cryo-Trap Install Kit for HP5890 Series I & II
Cryo-Trap Install Kit for HP 6890
Cryo-Trap Install Kit for Varian 3400/3600/3700
with 1075 Split/Splitless Injector
with 1040 Megabore Injector
with 1041 Universal Injector
with 1077 Split/Splitless Capillary Injector
Install Kit for Varian 3600 w/ 1078 Injector
Install Kit for Varian 3800
Cryo-Trap Install Kit for Shimadzu GC-9A
Install Kit for Thermo Finnigan GCQ
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