In a KWD-Globalpipe release, it was announced that crosslinked polyethylene pipes are now required to be validated for the oxidative stability when used in the potable water end use application in the United States.

ASTM F876, Standard Specification for Crosslinked Polyethylene (PEX) Tubing, has recently been updated (ASTM F876-02) to include a requirement for the oxidative stability in potable chlorinated water applications under Section 7.11 of the standard.