NF EN ISO 2171
Cereals, pulses and by-products - Determination of ash yield by incineration
ISO 2171:2007 specifies a method for determining the ash yielded by cereals, pulses and their milled products intended for human consumption. The source materials covered are: a) grains of cereals; b) flours and semolinas; c) milled products (bran and high bran content products, sharps); d) mixed cereal flours (mixes); e) cereal by-products other than milled products; and f) pulses and their by-products. ISO 2171:2007 is not applicable to starches and starch derivatives (see ISO 3593), to products intended for animal feeding stuffs (see ISO 5984), or to seeds.
ISO 2171:2007 specifies a method for determining the ash yielded by cereals, pulses and their milled products intended for human consumption. The source materials covered are: a) grains of cereals; b) flours and semolinas; c) milled products (bran and high bran content products, sharps); d) mixed cereal flours (mixes); e) cereal by-products other than milled products; and f) pulses and their by-products.
ISO 2171:2007 is not applicable to starches and starch derivatives (see ISO 3593), to products intended for animal feeding stuffs (see ISO 5984), or to seeds.
<p>ISO 2171:2007 specifies a method for determining the ash yielded by cereals, pulses and their milled products intended for human consumption. The source materials covered are: a) grains of cereals; b) flours and semolinas; c) milled products (bran and high bran content products, sharps); d) mixed cereal flours (mixes); e) cereal by-products other than milled products; and f) pulses and their by-products.</p> <p>ISO 2171:2007 is not applicable to starches and starch derivatives (see ISO 3593), to products intended for animal feeding stuffs (see ISO 5984), or to seeds.</p>
<p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: SimSun; mso-fareast-theme-font: minor-fareast;">This document specifies a method for determining the ash yield by cereals, pulses and their milled products intended for human consumption. The source materials and products covered are:</span></p> <p class="ListNumber1" style="tab-stops: 19.85pt 39.7pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: SimSun; mso-fareast-theme-font: minor-fareast;">a)<span style="mso-tab-count: 1;"> </span>grains of cereals;</span></p> <p class="ListNumber1" style="tab-stops: 19.85pt 39.7pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: SimSun; mso-fareast-theme-font: minor-fareast;">b)<span style="mso-tab-count: 1;"> </span>flours and semolinas;</span></p> <p class="ListNumber1" style="tab-stops: 19.85pt 39.7pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: SimSun; mso-fareast-theme-font: minor-fareast;">c)<span style="mso-tab-count: 1;"> </span>other milling products (bran and high bran content products, shorts);</span></p> <p class="ListNumber1" style="tab-stops: 19.85pt 39.7pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: SimSun; mso-fareast-theme-font: minor-fareast;">d)<span style="mso-tab-count: 1;"> </span>mixed cereal flours (mixes);</span></p> <p class="ListNumber1" style="tab-stops: 19.85pt 39.7pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: SimSun; mso-fareast-theme-font: minor-fareast;">e)<span style="mso-tab-count: 1;"> </span>cereal by-products other than c) (such as wheat gluten, maize grits, broken rice kernels);</span></p> <p class="ListNumber1" style="tab-stops: 19.85pt 39.7pt 59.55pt 79.4pt 99.25pt 119.05pt 138.9pt 158.75pt 178.6pt 7.0cm; mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: SimSun; mso-fareast-theme-font: minor-fareast;">f)<span style="mso-tab-count: 1;"> </span>pulses and their by-products (flour).</span></p> <p class="MsoBodyText" style="mso-layout-grid-align: none; text-autospace: none;"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: SimSun; mso-fareast-theme-font: minor-fareast;">This document does not apply to starches and starch derivatives (see </span><span class="stdpublisher"><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">ISO</span></span></span><span lang="EN-GB" style="mso-bidi-font-size: 12.0pt; mso-fareast-font-family: SimSun; mso-fareast-theme-font: minor-fareast;"> <span class="stddocNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">3593</span></span></span>), to products intended for animal feeding stuffs (see <span class="stdpublisher"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">ISO</span></span></span> <span class="stddocNumber"><span style="color: black; mso-color-alt: windowtext; border: none;"><span style="border: none;">5984</span></span></span>) or to seeds.</span></p>
- Avant-proposiv
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1 Domaine d'application1
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2 Références normatives1
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3 Termes et définitions1
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4 Principe2
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5 Réactifs2
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6 Appareillage2
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7 Échantillonnage3
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8 Préparation de l'échantillon pour essai3
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9 Mode opératoire3
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9.1 Détermination de la teneur en eau3
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9.2 Préparation des capsules à incinération3
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9.3 Préparation de la prise d'essai4
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9.4 Préincinération4
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9.5 Incinération4
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9.6 Nombre de déterminations4
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10 Expression des résultats5
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11 Fidélité5
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11.1 Essais interlaboratoires5
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11.2 Répétabilité5
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11.3 Reproductibilité6
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11.4 Différence critique6
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11.5 Incertitude6
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12 Rapport d'essai7
- Annexe A (informative) Résultats des essais interlaboratoires8
- Annexe B (informative) Application pratique des limites de répétabilité et de reproductibilité10
- Bibliographie11
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