The materials covered by the 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. Three classes are distinguished: satisfactory resistance, limited resistance, resistance not satisfactory. Corrosion resistance is given to 427 chemicals of different concentration at different temperatures.