Typically this pressure is 0.25 inches of drinking water column, but might be raised or reduced as the method calls for. Isolators should be periodically leak tested to ensure their integrity and prevent escape in the decontamination agent. Leak testing can be done by many solutions which include strain https://tailinscitech.weebly.com/blog/applications-and-benefits-of-tailin-containment-isolator-for-handling-high-potency-materials