Growing media. Determination of specific parameters

Growing media. Determination of specific parameters

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1   Scope

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.