NF EN 61198 : 1994

Cooperating organizations
National foreword
Foreword
Introduction
1. Scope
2. Normative references
3. Sampling
4. Labelling of samples
5. Apparatus
5.1 General equipment
5.2 Equipment for extraction by Method A
5.3 Equipment for extraction by Method B
5.4 High-performance liquid chromatograph (HPLC)
6. Reagents
7. Symbols and units
8. Analytes
9. Operating procedure
9.1 Extraction of the analytes
9.2 Analysis of the extract
10. Calibration
10.1 Standard solutions in oil
10.2 Standard solution in the chromatographic eluent
10.3 Procedure
11. Calculations
12. Report
13. Minimum level of detection
14. Precision
14.1 Repeatability
14.2 Reproducibility
Annex A - Checking extraction and recovery
Figures
Annex ZA (normative) Other international publications
quoted in this standard with the references of the
relevant European publications
National annex NA (informative) Committees responsible
National annex NB (informative) Cross-references

Specifies test methods for the analysis of 2-furfural and related furan compounds resulting from the degradation of cellulosic insulation and found in mineral insulating oil samples taken from electrical equipment. Coverage includes apparatus, reagents, analytes and precision. Also gives detailed diagrams.