有机流动相GPC标样-聚丁二烯, 窄MWD; Organic GPC/SEC StandardsPolybutadiene, Narrow MWD Polybutadiene ; Mp 60500, Mw 60700, Mn 55000 IV 0.913; IV* - Intrinsic VIscosity (dL/g) in THF at 30°C (a = 0.715; K = 0.000350) Note: IV values are available for PBU standards i