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Homepage>CSN EN 13650 - Soil improvers and growing media - Extraction of aqua regia soluble elements
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Released: 2001
CSN EN 13650 - Soil improvers and growing media - Extraction of aqua regia soluble elements

CSN EN 13650

Soil improvers and growing media - Extraction of aqua regia soluble elements

CURRENCY
LANGUAGE
English
Number of Standard:CSN EN 13650
Category:836639
Released:2001
DESCRIPTION

EN 13650


EN 13650 Soil improvers and growing media - Extraction of aqua regia soluble elements - This European Standard specifies a method for the routine extraction of aqua regia soluble elements (as listed in annex B) from soil improvers or growing media. Materials containing more than about 28 % (m/m) organic matter will require treatment with additional nitric acid. With high solute concentrations in extract solutions, spectral interference's and background enhancement should be expected. The method is not applicable to liming materials and preformed materials such as mineral wool slabs and foam slabs. NOTE 1 Aqua regia will not totally dissolve most soil improvers or growing media, and the efficiency of extraction for particular elements differs from element to element. Such efficiency might also differ for the same element in different matrices. Elements extractable in aqua regia cannot therefore, be described as "Totals"; conversely they cannot be regarded as the "bio-available" fraction, as the extraction procedure is too vigorous to represent any biological process. NOTE 2 The requirements of the standard may differ from the national legal requirements for the declaration of the products concerned.

Original English text of CSN EN Standard.
The price of the Standard included all amendments and correcturs.