MicroJet Cryo-Trap (MJT-2030E, MJT-1035E)


A cryo-focusing device that traps low-boiling-point compounds by liquid N2 cooling in GC oven.

Nitrogen gas flows through a heat exchange coil immersed in liquid nitrogen to liquefy it, and then the liquified nitrogen is sprayed as a jet flow onto the head of the separation column in the GC oven to cool and trap the analytes there. The cooled area is then rapidly heated by circulating heated air in the GC oven for thermal desorption. The MJT-2030E with new specifications now has a digital display of the nitrogen pressure gauge value, making it easier to adjust the nitrogen gas flow rate. In addition, the end of the liquid nitrogen introduction tube has been modified to a U shape, making column installation easier.

* There is also a stand-alone model (MJT-1035E) available for use with pre-processing equipment from third-party manufacturers, in addition to pyrolyzer.

  • Features

  • Specifications

    • High trapping efficiency of low-boiling-point compounds
    • Rapid cooling with low energy consumption
    • Controllable cooling temperature

【Mechanism】 * Move to Vimeo site by clicking the following link.
・ Operating mechanism of MicroJet Cryo-Trap (Video

Lowest achievable temperature:
Approx. -196 ºC (nitrogen gas flow rate approx. 7 L/min, GC oven temperature 40 ºC)

Separation column requirements:
Metal capillary separation column (inner diameter 0.25 mm or less)
Fused silica capillary separation column (inner diameter 0.53 mm or less)

160 (W) x 322 (W) x 100 (H) mm

Required power:
100 - 240 VAC, 40VA

*May not be installable, if another device is on the top of your GC oven.
*Please see the catalog for the specifications of the standalone model (MJT-1035E).