This International Standard sets out specifications relating to the conditioning and testing of all plastics and all types of test specimen at constant atmospheric conditions.Special atmospheres applicable to a particular test or material or simulating a particular climatic environment are not included in this International Standard.
EN ISO 291:2008 history
2008EN ISO 291:2008 Plastics - Standard atmospheres for conditioning and testing (ISO 291:2008)
2005EN ISO 291:2005 Plastics - Standard Atmospheres for Conditioning and Testing
1997EN ISO 291:1997 Plastics - Standard Atmospheres for Conditioning and Testing ISO 291: 1997