DIN CEN ISO/TS 23973:2022-04
Liquid chromatography at critical conditions (LCCC) - Chemical heterogeneity of polyethylene oxides (ISO/TS 23973:2020); German version CEN ISO/TS 23973:2021
| Fecha edición: |
2022-04-01
En Vigor
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| Idiomas disponibles: | Alemán |
| Resumen: | 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. |
| Keywords: | Adsorption|Chromatography|Coatings|Conditions|Conglomerates|Critical|Definitions|Heterogeneity|Inter-laboratory tests|Laboratory tests|Liquid chromatography|Measurement|Methods|Plastics|Polyethylen oxides|Polymers|Requirements|Sample preparation|Separation methods (chemical analysis)|Specification (approval)|Test reports|Validation |
| ICS: | 71.040.50 - Métodos de análisis físicoquímicos |
| CTN: | |
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Equivalencia Internacional |
Idéntica CEN ISO/TS 23973:2021 Idéntica ISO/TS 23973:2020 |
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Reemplazo Normas |
Reemplaza a DIN SPEC 91070:2017-10 |
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