a weight taken at 20o C, the conventional mass is the mass of a reference weight of a density of 8 000 kg/m3 which it balances in air of a density of 1 72 kg/m3
Account should be taken of the draft international recommendation, "valeur conventionnelle du résultat des pesées dans l'air", of the International Organization of Legal Metrology, May 1973, in respect of the concept of conventional mass.
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