BS 2782-9: Method 940A: 1990 ISO 2557-1: 1989 : Methods of testing Plastics — Part 9: Sampling and test specimen preparation — Method 940A: Preparation of test specimens of amorphous thermoplastics in the form of bars with a specified reversion
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This part of ISO 2557 specifies procedures for the preparation of test specimen of amorphous thermoplastic materials in the form of bars with a specified level of uniaxial molecular orientation which is characterized by determination of the maximum reversion Rm in accordance with ISO 8328.
BS 2782-9: Method 940A: 1990 ISO 2557-1: 1989 : Methods of testing Plastics — Part 9: Sampling and test specimen preparation — Method 940A: Preparation of test specimens of amorphous thermoplastics in the form of bars with a specified reversion