Dynacal® permeation tubes
VICI AG InternationalPermeation tubes are small, inert capsules containing a pure chemical compound in a two phase equilibrium between its gas phase and its liquid or solid phase. They are used to generate a stable concentration of a specific trace chemical. At a constant temperature, the device emits the compound through its permeable portion at a constant rate. They are typically inserted into a carrier flow to generate test atmospheres for c…