Standards Development
The method specified can be applied to all types of soil samples. Different procedures are specified for air-dried soil samples, e.g. samples pretreated according to ISO 11464, and for field-moist soil samples. Its principle is drying soil samples to constant mass at 105 °C and using the difference in mass of an amount of soil before and after the drying procedure to calculate the dry matter and water contents on a mass basis. For the determination of soil water content on a volume basis, refer to ISO 11461.
RECOMMENDATION 03/2023
For the proposed revision of ISO 11465:1993 and merging with EN 15934:2012, Sludge, treated biowaste, soil and waste – Calculation of dry matter fraction after determination of dry residue or water content
CEN/TC 444/WG 5 agrees on including the proposal of Arjan Veldhuizen for the introduction of EN 15934:2012. For the Scope a note with the first paragraph of the scope of CEN/TC 308 shall be included explaining the exceptions made in the document.
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