Transcription of Testing Methods for Fertilizers (2013) - FAMIC
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Testing Methods for Fertilizers (2013) - FAMIC
Testing Methods for Fertilizers ( 2013 ) Incorporated Administrative Agency Food and Agricultural Materials Inspection Center Note:This is unofficial translation. Only the original Japanese texts have effect and the translation is to be used solely as reference material. This center assumes no responsibility whatever for any direct, indirect, special, incidental, consequential damages and any other damages resulting from the use of this contents. No part of this text may be reproduced in any form without permission. 2 Introduction The Official Methods of Analysis of Fertilizers stipulated by the Ministry of Agriculture, Forestry and Fisheries is the only analysis method to assess main components and harmful components in Fertilizers in Japan and contributes to improving quality and securing guaranteed components of fertili
4.1 Nitrogen …..34 4.1.1 Total nitrogen …..34 4.1.1.a Kjeldahl method …..34 4.1.1.b Combustion method …..40 4.1.1.c Devarda’s alloy – Kjeldahl method …..45 4.1.1.d Reduced iron– Kjeldahl method …..50 4.1.1.e Calculation with ammonia nitrogen and nitrate nitrogen …..55 4.1.2 Ammoniac nitrogen …
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