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Fertilizers - Part 2- Sampling - Section 2.6 Guide to derivation of sampling plan for the evaluation of large delivery of solid fertilizer. Original standard BS 5551-2.6-1992 (1999) ISO'TR 5307-1991 in PDF full version. Additional info + preview on request

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Fertilizers - Part 2- Sampling - Section 2.8 Methods for preparation of samples of solid fertilizer for chemical and physical analysis. Original standard BS 5551-2.8-1991 (1999) ISO 8358-1991 in PDF full version. Additional info + preview on request

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Fertilizers - Part 2- Sampling - Section 2.9 Sampling plan for the evaluation of a large delivery of solid fertilizer. Original standard BS 5551-2.9-1991 (1999) ISO 8634-1991 in PDF full version. Additional info + preview on request

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Fertilizers - Part 3- Physical properties - Section 3.4 Method for determination of oil retention of high nitrogen content straight ammonium nitrate fertilizers. Original standard BS 5551-3.4-1987 (1999) ISO 5313-1986 in PDF full version. Additional info + preview on request

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Fertilizers - Part 4- Chemical analysis - Section 4.1 Determination of nitrogen - Subsection 4.1.2 Determination of ammoniacal nitrogen, titrimetric method after distillation. Original standard BS 5551-4.1.2-1982 (1999) ISO 5314-1981 in PDF full version. Additional info + preview on request

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Fertilizers - Part 4- Chemical analysis - Section 4.1 Determination of nitrogen - Subsection 4.1.4 Method for determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide. Original standard BS 5551-4.1.4-1984 (1999) ISO 7408-1983 in PDF full version. Additional info + preview on request

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