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BS EN ISO 16634-2:2016 – TC:2020 Edition

BS EN ISO 16634-2:2016 – TC:2020 Edition

$217.84

Tracked Changes. Food products. Determination of the total nitrogen content by combustion according to the Dumas principle and calculation of the crude protein content – Cereals, pulses and milled cereal products

Published By Publication Date Number of Pages
BSI 2020 72
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PDF Catalog

PDF Pages PDF Title
40 European Foreword
42 Foreword
43 Introduction
45 1 Scope
2 Normative references
3 Terms and definitions
46 4 Principle
5 Reagents
47 6 Apparatus
7 Sampling
8 Preparation of the test sample
48 9 Procedure
9.1 General
9.2 Test portion
9.3 Control of oxygen supply
49 9.4 Calibration
9.5 Determination
9.6 Detection and data processing
50 10 Calculation and expression of results
10.1 Calculation
10.1.1 Nitrogen content
10.1.2 Crude protein content
10.2 Expression of results
11 Precision
11.1 Interlaboratory tests
51 11.2 Repeatability
11.3 Reproducibility
11.4 Critical difference
11.4.1 Comparison of two groups of measurements in the same laboratory
52 11.4.2 Comparison of two groups of measurements in two different laboratories
11.5 Uncertainty
12 Test report
53 Annex A (informative) Flowchart for a basic Dumas apparatus
54 Annex B (informative) Schematic diagrams of suitable types of Dumas apparatus
57 Annex C (informative) Equipment calibration
59 Annex D (informative) Results of interlaboratory tests
66 Bibliography

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BS EN ISO 16634-2:2016 - TC
$217.84