EN 13038:1999

This European Standard specifies an instrumental method for the routine determination of electrical conductivity in a water extract of a soil improver or growing medium. The determination is carried out to obtain an indication of the content of water soluble electrolytes in either soil improvers or growing media. Note 1: This method is not applicable to liming materials or sewage sludges and is not suitable for materials like rockwool and foam slabs. Note 2: The requirements of the standard may differ from the national legal requirements for the declaration of the products concerned.