Cold Traps are devices used to facilitate the condensation of gases into liquids. They are employed to cool and condense gas. The primary purpose of a cold trap is to ensure the condensation of a substance in its gaseous phase at a specific temperature (typically very low temperatures like liquid nitrogen). This implies the conversion of gas into liquid.

In chemistry, one of the common uses of cold traps is to obtain a compound in a pure form. For instance, cold traps can be utilized to capture gases produced from a reaction and subsequently isolate these gases in liquid form. This serves as a means to separate unwanted reaction by-products and can enhance the purity of the desired compound.

Another common application is found in vacuum systems used in laboratories. The role of Cold Traps in vacuum systems is to facilitate the condensation of gases drawn by the vacuum pump. Consequently, the vacuum pump can operate more effectively, and undesirable gases can be removed from the system.

Other areas where Cold Traps are utilized include gas chromatography, chemical synthesis, and material research. These devices are significant tools for manipulating and processing gases in various scientific and industrial applications.