The characterization of linear polyethylene SRM's 1482, 1483, and 1484. II. Number-average molecular weights by membrane osmometry

Linear polyethylene Standard Reference Materials SRM 1482, 1483, and 1484 are certified for number-average molecular weight M _n . In this paper the experimental procedures employed for the determination of M _n for these materials by membrane osmometry are described, and the techniques used to analyze the data and to estimate limits of systematic error are discussed.