Russian standards PDF
Foodstuffs. Determination of trace elements. Determination of iodine by ISP-MS (inductively coupled plasma mass spectrometry)
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Fertilizers. Determination of chelating agents. Determination of iron chelated by EDDHSA by ion pair chromatography
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Fertilizers. Determination of chelating agents. Determination of iron chelated by EDDHA by ion pair chromatography
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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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