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Soil quality - Part 3- Chemical methods - Section 3.6- Determination of phosphorus - Spectrometric determination of phosphorus soluble in sodium hydrogen carbonate solution. Original standard BS 7755-3.6-1995 (1999) ISO 11263-1994 in PDF full version. Additional info + preview on request

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Soil quality - Part 3- Chemical methods - Section 3.7 Determination of total nitrogen - Modified Kjeldahl method. Original standard BS 7755-3.7-1995 (1999) ISO 11261-1995 in PDF full version. Additional info + preview on request

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Soil quality - Part 3- Chemical methods - Section 3.8 Determination of organic and total carbon after dry combustion. Original standard BS 7755-3.8-1995 (1999) ISO 10694-1995 in PDF full version. Additional info + preview on request

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Soil quality - Part 3-C hemicalm ethods - Section 3.9 Extraction of tracee lements soluble in aqua regia. Original standard BS 7755-3.9-1995 (1999) ISO 11466-1995 in PDF full version. Additional info + preview on request

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Soil quality - Part 4- Biological methods - Section 4.1 Biodegradability - Subsection 4.1.1 Guidance on laboratory testing for biodegradation of organic chemicals in soil under aerobic conditions. Original standard BS 7755-4.1.1-1995 (2000) ISO 11266-1994 in PDF full version. Additional info + preview on request

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Soil quality - Part 4- Biological methods - Section 4.2 Effects of pollutants on soil fauna - Subsection 4.2.1 Determination of acute toxicity to earthworms (Eisenia fetida) using artificial soil substrate. Original standard BS 7755-4.2.1-1994 (1999) ISO 11268-1-1993 in PDF full version. Additional info + preview on request

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