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Experiences with interlaboratory GPC experiments
Author(s) -
Bruessau Rudolf J.
Publication year - 1996
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.19961100103
Subject(s) - calibration , reproducibility , chemical nomenclature , computer science , detector , calibration curve , range (aeronautics) , quality (philosophy) , process engineering , analytical chemistry (journal) , statistics , materials science , mathematics , chromatography , chemistry , engineering , physics , detection limit , telecommunications , quantum mechanics , composite material , organic chemistry
Based on some round robin experiments organized in the last years by a DIN working group and by the IUPAC working party IV.2.2, the paper discusses measures for getting a better interlaboratory reproducibility of GPC results. The most important points are: ‐ selecting columns according to their separation selectivity and range ‐ avoiding artifacts in the distribution curves, caused by gaps in the pore volume distribution ‐ avoiding adsorption and memory effects ‐ calibration: using calibration standards of high quality selecting suitable calibration points checking the influence of the injected concentration ‐ selecting a common detector ‐ data treatment, especially finding the correct baseline ‐ preparing a detailed data report according to a uniform schedule.