ISO 17491-3:2008 specifies a test method for determining the resistance of protective clothing against penetration by a jet of liquid.

ISO 17491-3:2008 is applicable to clothing with liquid-tight connections between different parts of the clothing and, if applicable, between the clothing and other items of personal protective equipment worn with it.

ISO 17491-3:2008 does not address chemical permeation resistance of the clothing materials, which is specified in other standards.