Airdrop USES the same concept, working on the principle that even the driest air contains water molecules that can be extracted by lowering the air's temperature to the point of condensation.
In this article, the basic principle of alkaline condensation reactions of furfural as well as their application in the synthesis of furan perfume are described.
On the basis of practicing, the operational principle and features of dual condensation chamber used for drum water level measurement are presented in detail.