This part of EN 868 provides test methods and values for uncoated nonwoven materials of polyolefines used for sterile barrier systems and/or packaging systems that are intended to maintain sterility of terminally sterilized medical devices to the point of use.NOTE 1 The need for a protective packaging may be determined by the manufacturer and the user.This part of EN 868 only introduces performance requirements and test methods that are specific to the products covered by this part of EN 868 but does not add or modify the general requirements specified in EN ISO 11607-1.As such, the particular requirements in 4.2 to 4.3 can be used to demonstrate compliance