Commonly this pressure is 0.25 inches of water column, but is usually raised or lowered as the process needs. Isolators have to be periodically leak tested to be certain their integrity and prevent escape from the decontamination agent. Leak testing can be achieved by a variety of methods which https://tailinscitech.wixsite.com/tailinscitech/post/applications-and-benefits-of-tailin-containment-isolator-for-handling-high-potency-materials