The present invention provides for the first time ultrafiltration/diafiltration membranes that are capable of excluding 0.02 .mu.m diameter, monodisperse, latex particles and are capable of being dried without loss of such ultrafiltration properties. A rapid, reliable method for integrity testing...http://www.google.es/patents/US5685991?utm_source=gb-gplus-sharePatente US5685991 - Integrity-testable wet-dry-reversible ultrafiltration membranes and method for testing same
Integrity-testable wet-dry-reversible ultrafiltration membranes and method ...