NF 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>
- 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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