English: Imaging of frozen objects mostly creates problems for two reasons: 1. As soon as a frozen object gets out of the freezer, its surface will soon be covered with ice from the humidity, present in the air. 2. Frozen samples cool down the neighbor air and might create a local "fog" between the object and the camera.

The solution to solve this problem is to freeze the objects inside a container, in which we pump Argon gas through a valve before freezing. The container will be covered during freezing. The (in Argon) frozen samples will be placed in a "Gas Station", an open box in which a similar valve has been mounted to import Argon gas. Since Argon is heavier than air, the sample box can be left open for taking images from above. A small laminar Argon flow might be requested to replace the lost Argon due to local air movements.

This approach has been applied in the so-called “ProductDefiner”, an instrument for the hyper spectral fingerprinting of (frozen) samples. (progresscontrol.com )