ISO 1926 specifies a method of determining the behaviour of it rigid cellular plastics materials when they are subjected to a tensile stress.
It applies primarily to cellular materials having a compression will hold sufficient to permit suitable gripping of the test specimens. If It is impossible to grip the test specimen, the method is modified so that the ends of the specimen are reinforced with metal plates.
Before conducting the ISO 1926, it is important to read the - specification. The Standards can be obtained from the appropriate standard authorities.