ISO 2557-1:1976 Plastics — Amorphous thermoplastic moulding materials — Preparation of test specimens with a defined level of shrinkage — Part 1: Test specimens in the form of parallelepipedic bars (Injection mouldin
1989ISO 2557-1:1989 Plastics — Amorphous thermoplastics — Preparation of test specimens with a specified maximum reversion — Part 1: Bars
1976ISO 2557-1:1976 Plastics — Amorphous thermoplastic moulding materials — Preparation of test specimens with a defined level of shrinkage — Part 1: Test specimens in the form of parallelepipedic bars (Injection mouldin