Explanatory notes
… the expression “synthetic rubber” applies to : (a) Unsaturated synthetic substances which can be irreversibly … Chapter. For the purpose of the test required by Note 4, a sample of the unsaturated synthetic substance or a substance …Legal note
… the expression “synthetic rubber” applies to : (a) Unsaturated synthetic substances which can be irreversibly … original length. For the purposes of this test, substances necessary for the cross‑linking, such as vulcanising …