Micro Cryo-Trap™(Catalog D4)

Micro Cryo-Trap™

D4

Phone: 908-788-5550

www.sisweb.com

Features:

•

Only 1.0" long - uses minimum amount of

cooling gas

•

Reduction of CO

2

or LN

2

use by 97%

as compared to cooling the entire oven.

•

Improve chromatographic resolution of

early eluting peaks

•

Dual programmable cryo-cooling and heating

cycles

•

Trap compounds in the GC oven at the head of

the GC column.

•

Remote input connector for switching between

cryo-cooling and 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.

•

Easy Installation

•

Clamp Mounts onto GC Injection Port

Applications:

•

Thermal Desorption Sample Trapping

•

Purge and Trap Systems

•

GC Headspace Sample Analysis

•

Multi-dimensional GC Applications

T

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

chamber which is 3/4" in diameter and 1" long and mounts

on the bottom of the injection port just inside the GC oven.

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. 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 mea-

surement of both the cooling and heating temperatures. Either Liquid

CO

2

or Liquid Nitrogen for cooling is introduced into the Micro Cryo-

Trap™ (Cooling Gas In), and is exhausted through the outlet. The

exhaust can either be vented into the GC Oven or a tube can be

attached to vent the cooling gas external to the GC.

The control of the Micro 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 temperature con-

troller. The system can be used either manually to switch between

cooling and heating or can be operated automatically via an input sig-

nal from a controlling device.

For the cooling operation the cooling gas is pulsed into the cham-

ber. Liquid CO

2

(Model 971) will cool down to -70° C. Liquid Nitrogen

(Model 981) will cool down to -180°C. The cooling temperature can be

set to any temperature between room temperature and the lower lim-

its of the cooling gas. The temperature controller will pulse the cooling

gas into the chamber to accurately control the temperature to the

value you set. The thermocouple provides the feedback to both regu-

late the temperature as well as display the Micro Cryo-Trap™ temper-

ature on the display of the temperature controller. The electronics of

the Model 971 and Model 981 are different due to the different cooling

properties of the liquid CO

2

and Liquid Nitrogen. Therefore parts are

not interchangeable between the two models and the particular model

can only be used with the cooling gas for which it was designed.

Each Micro Cryo-Trap System consists of the Micro Cryo-Trap™

which goes inside the GC oven, the cryogenic gas valve, the Dual

Temperature Controller and cooling gas tubing.

Micro Cryo-Trap

New Programmable Micro Cryo-Trap™ for the Cryo-focusing of Volatiles and Semi-Volatiles at the Head of GC Columns.

Micro Cryo-Trap™

only

1.0 inch long

Free Application Notes Available - www.sisweb.com