Components for BAC control loops - Valve and actuator assemblies - Part 1: Water-based HVAC applications; German version EN 17691-1:2025

Organic soil improvers – Methods for the determination of pH, electrical conductivity, organic carbon content and organic nitrogen content; German and English version prEN 17728:2026

Soil improvers - Methods for the determination of the dry matter, quantity, copper, zinc, chloride, nitrogen, P2O5 and K2O content; German and English version prEN 17729:2025

Soil improvers and growing media - Methods for the determination of PAH₁₆, macroscopic impurities above 2 mm, the temperature-time profiles, oxygen uptake rate, self-heating factor and residual biogas potential in compost and digestate when used in fertilizing products; German and English version prEN 17730:2026

Growing media - Methods for the determination of the electrical conductivity, pH, dry matter, quantity, total copper and zinc content, water soluble chloride content, and CaCl₂/DTPA extractable nitrogen, P₂O₅ and K₂O content; German and English version prEN 17731:2026

Soil improvers and growing media - Terminology; German and English version prEN 17732:2025

Soil improvers and growing media - Methods for sampling and sample preparation; German and English version prEN 17733:2025

Inorganic fertilizers - Determination of specific parameters in ammonium nitrate fertilizers of high nitrogen content

Inorganic fertilizers - Determination of specific inhibiting compounds; German and English version prEN 17752:2026

Inorganic fertilizers - Determination of specific contaminants; German and English version prEN 17753:2026