GC Cryo-Trap™ (Catalog D6)

GC Cryo-Trap™

D6

Phone: 908-788-5550

www.sisweb.com

Applications

•

Thermal Desorption Sample Trapping

•

Purge and Trap Systems

•

GC Headspace Sample Analysis

•

Multi-dimensional GC applications

•

Improve Chromatographic

resolution of early eluting peaks

Features:

•

Cooling Chamber is 4" long

•

For use in high flow applications (2-50 ml/min)

•

2 models available Model 951 for Liquid CO

2

cooling

to -70°C Model 961 for Liquid N

2

cooling  to -180°C.

•

Reduction of CO

2

or LN

2

use by 90%

as compared to cooling the entire oven.

•

Dual programmable cryo-cooling and heating cycles

•

Trap compounds in the GC oven at the head of the

GC column.

•

Remote input connector for cryo-cooling to

heating

cycle switching via GC, Desorption

system or manually.

•

Rapid heating up to 400°C at > 400°C per minute.

•

Remote start output signal for starting GC,

MS or recorder.

•

Custom I.D. sizes available

T

he Cryo-Trap consists of a small heating/cooling cham-

ber which is 3/4" in diameter and 4" long. In the center

of the chamber is a small stainless steel capillary

through which the capillary column freely passes. Capillary

columns up to megabore (0.53mm I.D.) diameters can be used

(other I.D.’s are also available). Around the stainless steel capillary

tube a heating coil is wound to provide for the rapid heating of the

capillary tube. A thermocouple provides accurate measurement of

both the cooling and heating temperatures. Either Liquid CO2

(Model 951) or Liquid Nitrogen (Model 961) for cooling is intro-

duced into the Cryo-Trap, and is exhausted through the outlet

which can either be vented into the GC or a tube can be attached

to vent external to the GC oven.

The control of the Cryo-Trap is provided via an independent

Cryo-Trap Controller provided with the System. Both the Cryo-

Cooling and heating temperatures are set via this digital tempera-

ture controller. The system can be used either manually to switch

between cooling and heating or can be operated automatically via

an input signal from a controlling device.

Programmable Cryo-cooling and Heating Trap:

Cryo-Focusing of Volatiles and Semi-Volatiles at the Head of GC Capillary Columns.

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 Heating and Cooling Controller