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Fertilizers. Determination of nitric and ammoniacal nitrogen according to Deward

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Fertilizers. Determination of total nitrogen in urea

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Foodstuffs. Determination of trace elements. Determination of sodium and magnesium by flame atomic absorption spectrometry (AAS) after microwave digestion

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Fertilizers. Determination of nitric and ammoniacal nitrogen according to Ulsch method

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Fertilizers. Determination of total nitrogen in calcium cyanamide nitrate free

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Fertilizers. Determination of total nitrogen in calcium cyanamide containing nitrates

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