National foreword<br>National Annex NA (informative) - Bibliography<br>European foreword<br>Foreword <br>Introduction<br>1 Scope<br>2 Normative references<br>3 Terms and definitions<br>4 Symbols<br>5 Principles of correct sample reduction<br>6 Apparatus<br>7 Sample reduction - General principles<br>8 Methods for sample division<br>9 Method for reducing laboratory samples to sub-samples <br> and general analysis samples<br>10 Storage and labelling<br>11 Performance characteristics<br>Annex A (informative) - Precision in relation to division method<br>Annex B (informative) - Scheme of sample preparation for samples <br> from single delivery<br>Annex C (informative) - Scheme of sample preparation for <br> samples from continuous delivery<br>Bibliography