This document provides an overview of relevant methods for the determination of specific parameters in growing media, including: — the electrical conductivity; — the pH; — dry matter; — the nitrogen, P2O5 (phosphorus pentoxide) and K2O (potassium oxide) content extractable by CaCl2/DTPA; — the total copper and zinc content; — the quantity. This document is applicable to EU fertilizing products classified as PFC 4 and PFC 7 as long as the main function of the EU fertilizing product is classified as PFC 4 of Regulation (EU) 2019/1009 [1]. This document is not applicable to preformed materials such as mineral wool slabs and foam slabs.
CEN/TS 17731:2022 history
2022CEN/TS 17731:2022 Growing media - Determination of specific parameters