Thé — Préparation d'une infusion en vue d'examens organoleptiques
La présente Norme internationale spécifie une méthode de préparation d'une infusion de thé en vue d'examens organoleptiques, obtenue en faisant infuser des feuilles de thé.
Ductile iron pipes — Centrifugal cement mortar lining — Composition controls of freshly applied mort...
Specifies a certain number of methods used for controls of mortar linings complying with requirements of ISO 4179 and applied csntrifugally on the inner surface of pipes intended for transporting water under pressure as defined in ISO 2531. Describes the drying method and the xylol method.
Tobacco and tobacco products — Determination of maleic hydrazide residues
This method is also applicable to the residues from maleic hydrazide sucker control agents used on tobacco crops. Annex A describes optional extra procedure such as acid pre-digestion and carbon clean-up, and Annex B includes some notes on the distillation procedure.
