This document provides guidance for health care product manufacturers in the selection and qualification of polymeric materials, ceramics, and metals for use in health care products sterilized by the following methods: • Radiation (gamma, electron beam, or x-ray) • Ethylene oxide (EO) • Moist heat (steam) • Dry heat • Hydrogen peroxide • Nitrogen dioxide • Vaporized peracetic acid • Liquid peracetic acid • Hydrogen peroxide–ozone NOTE—All references to hydrogen peroxide sterilization in this TIR refer to sterilization in the gas phase.