2012ISO 2561:2012 Plastics - Determination of residual styrene monomer in polystyrene (PS) and impact-resistant polystyrene (PS-I) by gas chromatography
2006ISO 2561:2006 Plastics - Determination of residual styrene monomer in polystyrene (PS) and impact-resistant polystyrene (PS-I) by gas chromatography
1974ISO 2561:1974 Plastics; Determination of residual styrene monomer in polystyrene by gas chromatography