Cryogen Free

Closed Cycle Cryogenic Cold Trap Systems

Double Cryogenic Cold Trap, Janis Research

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Single Cryogenic Cold Trap, Janis Research

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Special Double-refrigerated Cold Trap with Inlet and Outlet Lines to Three Traps (a Water Vapor Trap, a 24 K Trap and a 12 K Trap)

Standard Single Cold Trap with Pressure Activated Charcoal Getter for Operation between 10 K and 340 K (Optional 450 K)

Click on button below to enlarge view of 10 K Closed Cycle cold trap using Model DE-202 coldhead, Janis Research
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Single Cryogenic Cold Trap, Janis Research

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Standard Single Cold Trap with
Model DE-202 Cold Head

Standard Single Cold Trap

Janis Research Company offers a series of cryogenic cold trap systems (CCT) using mechanical coolers. These traps are primarily used in the adsorption of noble gases, including helium, neon, argon, krypton and xenon. The CCT's aid in the extraction of such gases from geological materials collected from volcanic hot springs, to get insight into the planetary evolution of the Earth. They are also used to adsorb various oxygen isotopes from meteorites and polar ice caps and ocean island olivines.

The CCT's are supplied in a variety of customized configurations for operation at precisely controlled temperatures between 10 K and 450 K. These include multiple isothermal traps in one unit, or several multipurpose traps (water vapor, carbon dioxide, oxygen, helium, etc.) in the same system. All systems are supplied with thermometry and automatic temperature controllers for full computerized automation. Below are descriptions of three different types of cold traps.

1. A single cold trap designed to operate between 10 K and 450 K, or in a simpler version that reaches 340 K. The cold trap itself is made from copper (0.75" ID x 0.85" tall), with a pressure cooled activated charcoal getter.

2. A multiple trap system (seven traps in this case) operating between 25 K and room temperature. The six independent trapping volumes can all be cycled simultaneously between the two extreme temperatures.

3. A double refrigerated system which includes inlet and outlet lines into three traps. The first one is a water vapor trap with ends held at -140 °C and -60 °C. The second trap is a 24 K trap with inlet and outlet lines, and the third trap is a 12 K trap with one inlet line.

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