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Signalling on low voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 4-2: Low voltage decoupling filters - Safety requirements; German and English version prEN 50065-4-2:2021

Signalling on low-voltage electrical installations in the frequency range 3 kHz to 148,5 kHz - Part 4-7: Portable low voltage decoupling filters - Safety requirements; German and English version prEN 50065-4-7:2021

ISO/NP 12249-1 Sustainability of particulate air filters for general ventilation ? Part 1: Method of life cycle cost calculation

Particulate air filters for general ventilation - Part 2: Method of calculation for the energy performance of air cleaning devices and for the classification of the energy performance

Eye and face protection - Sunglasses and related eyewear - Part 2: Filters for direct observation of the sun

Geometrical product specifications (GPS) - Filtration - Part 21: Linear profile filters: Gaussian filters (ISO/FDIS 16610-21:2024); German and English version FprEN ISO 16610-21:2024

Geometrical product specifications (GPS) - Filtration - Part 22: Linear profile filters: Spline filters (ISO/DIS 16610-22:2024); German and English version prEN ISO 16610-22:2024

Geometrical product specifications (GPS) – Filtration – Part 31: Robust profile filters: Gaussian regression filters (ISO/FDIS 16610-31:2024); German version FprEN ISO 16610-31:2024

Geometrical product specifications (GPS) - Filtration - Part 45: Morphological profile filters: Segmentation (ISO/FDIS 16610-45:2024); German version FprEN ISO 16610-45:2024

Air filters for general ventilation — Part 1: Technical specifications, requirements and classification system based upon particulate matter efficiency (ePM)

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