This part of IS0 8361 specifies the test conditions for determining the water absorption of acrylonitrile/ butadienektyrene (ABS) pipes and fittings, whatever their applications and use, which contain only the necessary antioxidants and stabilizers together with any necessary pigments. NOTE 1 The general test method for the determination of the water absorption of thermoplastics pipes and fittings is given in IS0 8361-l. This part of IS0 8361 also gives, for information purposes, the preferred maximum value of the water absorption. The water absorption values appropriate for the intended applications of particular ABS pipes and fittings are specified in the relevant product standards.