Usually this pressure is 0.25 inches of h2o column, but can be lifted or lowered as the process requires. Isolators need to be periodically leak tested to make sure their integrity and forestall escape in the decontamination agent. Leak testing can be achieved by different approaches which includes strain https://www.tumblr.com/tailinscitech/805881091208724480/applications-and-benefits-of-tailin-containment?source=share