This document specifies a test method for the determination of the ability of diaper coverstock to resist the transport back onto the skin of a liquid which has already penetrated the coverstock. This test corresponds with Repeated Liquid Strike-Through Time - NWSP 070.7. This test method is intended for Quality Control and is designed for comparison of wetback for different nonwoven coverstocks and treatments. It does not simulate in use conditions for finished products. SI values are regarded as the official standard system of measurement for this standard procedure. If other systems of measurement are used in place of SI units (including inch-pound), their values must be reported independently. Systems of measurement must not be combined in any way, but shall be regarded and reported separately.