DIN EN 15961:2012 Fertilizers - Extraction of water-soluble calcium, magnesium, sodium and sulfur in the form of sulfates; German version EN 15961:2011
EN 12944-1:1999 Fertilizers and Liming Materials - Vocabulary - Part 1: General Terms
EN 12944-2:1999 Fertilizers and Liming Materials - Vocabulary - Part 2: Terms Relating to Fertilizers
DIN EN 15961:2012 history
2017DIN EN 15961:2017-03 Fertilizers - Extraction of water-soluble calcium, magnesium, sodium and sulfur in the form of sulfates; German version EN 15961:2017
2017DIN EN 15961:2017 Fertilizers - Extraction of water-soluble calcium, magnesium, sodium and sulfur in the form of sulfates
2012DIN EN 15961:2012 Fertilizers - Extraction of water-soluble calcium, magnesium, sodium and sulfur in the form of sulfates; German version EN 15961:2011