Commonly this strain is 0.25 inches of h2o column, but may be raised or lowered as the process requires. Isolators need to be periodically leak tested to make sure their integrity and prevent escape with the decontamination agent. Leak testing can be achieved by various strategies which includes pressure https://tailinscitech.weebly.com/blog/applications-and-benefits-of-tailin-containment-isolator-for-handling-high-potency-materials