Generally this force is 0.25 inches of h2o column, but can be raised or lowered as the process requires. Isolators need to be periodically leak tested to be certain their integrity and prevent escape of your decontamination agent. Leak testing can be achieved by numerous strategies including tension decay https://www.tumblr.com/tailinscitech/805881091208724480/applications-and-benefits-of-tailin-containment?source=share