2023BS ISO 2561:2023 Plastics. Determination of residual styrene monomer in polystyrene (PS) and impact-resistant polystyrene (PS-I) by gas chromatography
2012BS ISO 2561:2012 Plastics. Determination of residual styrene monomer in polystyrene (PS) and impact-resistant polystyrene (PSI) by gas chromatography
0000 BS ISO 2561:2006
1978BS 2782-4 Method 453A:1978 Methods of testing plastics - Chemical properties - Determination of residual styrene monomer in polystyrene by gas chromatography