ISO 787-23-1979 General methods of test for pigments and extenders part 23 determination of density (using a centrifuge to remove entrained air)《颜料和体质颜料的通用试验方法 .pdf

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1、Norme internationale 787123 INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONWVlEYHAPOHAR OPrAHM3AL m2 est la masse, en grammes, du produit dans lair; m3 est la masse, en grammes, du support, du tube, de la baguette en verre et du produit, immergs dans le liquide de dplacement; Q est la masse volumique

2、 en grammes par millilitre, du liquide de dplacement la temprature t. Fidlit 8.1 Rptabilit (r) La valeur au-dessous de laquelle on doit sattendre, avec une probabilit de 95 %, ce que se situe lcart entre deux rsul- tats obtenus sur le mme produit, par un mme oprateur, dans un mme laboratoire, en em

3、ployant le mme appareillage et dans un court intervalle de temps, en appliquant la mthode dessai normalise, est 0,03 g/ml. 8.2 Reproductibilit U?) La valeur au-dessous de laquelle on doit sattendre, avec une probabilit de 95 %, ce que se situe lcart entre deux rsul- tats, chacun tant la moyenne de d

4、eux mesures, obtenus sur un produit identique, par des oprateurs diffrents, dans des laboratoires diffrents, en appliquant la mthode dessai nor- malise, est 0,05 g/ml. 9 Procs-verbal dessai Le procs-verbal dessai doit contenir au moins les informations suivantes : a) le type et lidentification du pr

5、oduit essay; b) une rfrence la prsente Norme internationale ou une norme nationale correspondante; c) les dtails concernant le liquide de dplacement et la temprature de la dtermination; d) toute modification, par accord ou autrement, du mode opratoire spcifi; e) le rsultat de lessai; f) la date de lessai. . Page blanche Page blanche

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