Electromagnetic compatibility of technical equipment. Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz. Part 2-1. Mains communications equipment and systems operating in the range of frequencies 95 kHz to 148,5 kHz intended for use in residential, commercial and light industrial environments. Immunity requirements and test methods
Textiles. Quantitative chemical analysis. Part 6. Mixtures of viscose, certain types of cupro, modal or lyocell with certain other fibres (method using formic acid and zinc chloride)
