1.1 This Technical Report establishes a classification of the chemical resistance of pipe materials to specified fluids over a range of temperatures. The pipe materials covered by this classification are: Low-density polyethylene High-density polyethylene Polypropylene Poly(vinyl chloride), unplasticized Poly(vinyl chloride), chlorinated Polybutene Acrylonitrile/butadiene/styrene Poly(vinylidene fluoride) Cross-linked polyethylene PE-LD PE-HD1l pp PVC-U PVC-C PB ABS PVDF PE-)(21