90.93 Standard confirmed Jan 12, 2023
ISO
ISO/TC 138/SC 5 General properties of pipes, fittings and valves of plastic materials and their accessories -- Test methods and basic specifications
International Standard
91.140.60 Water supply systems | 93.025 External water conveyance systems | 23.040.20 Plastics pipes
Specifies a method of test for the determination of the extractability of certain stabilizers of unplasticized PVC in order to verify that the extracted quantities do not exceed a certain concentration. Tubular test pieces are prewashed during a fixed time. After this they are extracted with acidified (CO2) water in three steps and the quantity of the extracted stabilizers (lead salts or organic derivates to tin) shall be determined. The analytic methods are not specified.
PUBLISHED
ISO 3114:1977
90.93
Standard confirmed
Jan 12, 2023