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Application Note 061

Diffusion-locking technology

Application Note 061

Diffusion-locking is a patented technology for thermal desorption developed by Markes International. It keeps sample tubes sealed at ambient pressures, but allows gas to flow through the tubes whenever pressure is applied.

Diffusion-locking does not involve any kind of valve or other moving parts, and is thus inherently simple and robust.

This application note provides a detailed description of the principles of diffusion locking, and how it can be applied to enhance both sorbent tube sampling and the automation of analytical thermal desorption.

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