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SIS 1-Inch Micro Cryo-Trap (Model 971/981)

Catalog D4, D5

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New Programmable Micro Cryo-Cooling and Heating Trap for the Cryo-focusing of Volatiles and Semi-volatiles at the Head of GC Capillary Columns.

Features

Only 1.0" Long - Uses minimum amount of cooling gas
Reduction of C02 or LN2 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 deg C at > 1000 deg C per minute.
Remote start output signal for starting GC, MS or recorder.

Applications

Thermal Desorption Sample Trapping
Purge and Trap Systems
GC Headspace Sample Analysis
Multi-dimensional GC applications

Theory of Operation

Cryo-trap in GC oven.

Diagram of cryo-trap.

Purge & Trap of Black Tea, before and after cryo-trapping.

Trapping Efficiency of Hydrocarbons on 0.53 mm DB5 (1.5u film thickens) at various cryo-trapping temperatures 0 to -180 °C.

CO2/LN2

New Programmable Micro Cyro-cooling and heating trap for the Cryo-focusing of volatiles and semivolatiles at the head of GC capillary columns.

Two models of the Micro Cryo-Trap are now available. The Model 971 is designed for liquid CO₂ use only for cryo-trapping temperatures down to -70 °C. The Model 981 is designed for Liquid Nitrogen use only 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 GC Cryo-Traps, both models can heat the GC Cryo-Trap at temperatures up to 400 °C at a heating ramp rate in excess of 1200 deg/minute. Most users prefer to use the C0₂ version of the GC Cryo-Trap (Model 971) due to the ease of handling liquid C0₂ and for applications where -70 °C is an acceptable lower temperature limit.

If lower temperatures are required, then the liquid nitrogen version of the GC Cryo-Trap (Model 981) must be used. The liquid nitrogen delivery lines are larger than the CO₂ 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.

Model 971 Micro Cryo-Trap for use with Liquid C0₂

The Model 971 Micro Cryo-Trap is designed for use with liquid CO₂ tanks with a DIP tube. The minimum temperature of cooling is -70 °C. This model comes with the Micro Cryo-Trap, the dual temperature electronics controller, connecting cables and stainless steel connecting line. *Order installation kit below.

Model 981 Micro Cryo-Trap for use with Liquid Nitrogen

The Model 981 Micro Cryo-Trap is designed for use with liquid nitrogen tanks (low pressure). The minimum temperature of cooling is -180 deg. C. This model comes with the Micro Cryo Trap, the dual temperature electronics controller, connecting cables and copper connecting line. *Order installation kit below.

Installation Kits

Depending on the make and model of your GC, an installation kit must be ordered separately as described below. First you must decide which model of Cryo-Trap is required for your application; the Model 971 for use with C0₂, or the Model 981 for use with liquid Nitrogen. Although the Cryo-Trap can be used for both CO₂ and LN₂, 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(tm) models will fit the same installation kits listed.

Literature/Installation

Micro Cryo-Trap Theory of Operation - Description

References and Literature

Part No.	Description	Stock/ Lead Time	Price EA	Order
Cryo-Traps
971110	Model 971 Micro Cryo-Trap, electronics controller, connecting cables, and stainless steel connecting lines, for use with liquid C02	DISCONTINUED	---	---
981110	Model 981 Micro Cryo-Trap, electronics controller, connecting cables, and stainless steel connecting lines, for use with liquid LN2	DISCONTINUED	---	---
Cryo-Traps Install Kits
900110	Cryo-Trap Install Kit for HP 5890A	0^†Standard lead-time for non-stock items is approximately two weeks depending on the item.	$381.25	Qty
900111	Cryo-Trap Install Kit for HP5890 Series I and II	0^†Standard lead-time for non-stock items is approximately two weeks depending on the item.	$301.88	Qty
900112	Cryo-Trap Install Kit for Agilent 6890 & Agilent 7890	1	$111.88	Qty
900120	Cryo-Trap Install Kit for Varian 3400/3600/3700 with 1075 Split/Splitless Injector, 1040 Megabore Injector, 1041 Universal Injector, 1077 Split/Splitless Capillary Injector	0^†Standard lead-time for non-stock items is approximately two weeks depending on the item.	$152.50	Qty
900121	Cryo-Trap Install Kit for Varian 3600 w/ 1078 Injector	0^†Standard lead-time for non-stock items is approximately two weeks depending on the item.	$152.50	Qty
900122	Cryo-Trap Install Kit for Varian 3800	0^†Standard lead-time for non-stock items is approximately two weeks depending on the item.	$217.50	Qty
900131	Cryo-Trap Install Kit for Shimadzu GC-2010/2014	DISCONTINUED	---	---
900130	Cryo-Trap Install Kit for Shimadzu GC-9A	0^†Standard lead-time for non-stock items is approximately two weeks depending on the item.	$155.00	Qty
900140	Cryo-Trap Install Kit for Thermo Finnigan GCQ	0^†Standard lead-time for non-stock items is approximately two weeks depending on the item.	$155.00	Qty
900150	Cryo-Trap Install Kit for Thermo Finnigan Trace GC	24 hours^‡Lead time for this non-stock item is approximately 24 hours.	$118.75	Qty
96225001	Cryo-Trap Body	DISCONTINUED	---	---
98225001	Cryo-Trap Body	DISCONTINUED	---	---
* Call for availability. † Standard lead-time for non-stock items is approximately two weeks depending on the item. ‡ Lead time for this non-stock item is approximately 24 hours.
Ordering information. International (non-US) prices available through your local dealer.