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ČSN P CEN ISO/TS 23973 (673053)
Liquid chromatography at critical conditions (LCCC) - Chemical heterogeneity of polyethylene oxides
Translate name
STANDARD published on 1.6.2022
The information about the standard:
Designation standards: ČSN P CEN ISO/TS 23973
Classification mark: 673053
Catalog number: 514451
Publication date standards: 1.6.2022
SKU: NS-1064232
The number of pages: 64
Approximate weight : 192 g (0.42 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
The category - similar standards:
Annotation of standard text ČSN P CEN ISO/TS 23973 (673053):
This document establishes a valid method for separation of chemically heterogeneous polyethylene oxide (PEO) mixtures and for the determination the number and content of the chemically heterogeneous species in the overall sample. The method presented in this document serves as a technical guideline and enables laboratories to learn the principle of "critical chromatography" on a validated system. This method presented in this document with its stated system parameters is not applicable for other polymer classes, due to the diversity of the interactions between the polymer/mobile phase/stationary phase and the number of separation systems that are therefore available. The evaluation of the interlaboratory testing has shown that many error sources relate to the technique of liquid chromatography in general. Possible error sources are described in Annex A. Details on the evaluation of the interlaboratory testing are given in Annex B. Elugrams of the participants (excerpts) are given in Annex C. Investigations of the long-term stability of the test mixture are given in Annex D
Preview of the standard ČSN P CEN ISO/TS 23973 (673053)
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