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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
A Report on the Certification of an Absolute Molecular Mass Distribution Polymer Standard: Standard Reference Material 2881

A Report on the Certification of an Absolute Molecular Mass Distribution Polymer Standard: Standard Reference Material 2881

Nist

Paperback

Technology & Engineering

ISBN10: 1493754378
ISBN13: 9781493754373
Publisher: Createspace
Published: Nov 12 2013
Pages: 68
Weight: 0.40
Height: 0.14 Width: 8.50 Depth: 11.02
Language: English
The certification of an absolute molecular mass distribution polymer Standard Reference Material, SRM 2881, is described. SRM 2881 is an n octyl initiated, proton terminated, narrow polydispersity, low mass, atactic polystyrene. The absolute molecular mass distribution (MMD) was obtained by matrix assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF MS). The certification includes estimates of uncertainties, both Type A (random) and Type B (systematic), for each oligomer in the sample having a concentration of at least 0.18% of the total of all oligomers on the low mass tail of the MMD and 0.02% on the high mass tail. The bottle-to-bottle variation of the packaged SRM was checked by size exclusion chromatography and found to be negligible.

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