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ISO 649-1:1981

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Verrerie de laboratoire — Aréomètres à masse volumique d’usage général — Partie 1: Spécifications

Published By Publication Date Number of Pages
ISO 1981-08 12
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The requirements for basic series and sub-series of glass hydrometers of constant mass without built-in thermometer are specified. They are graduated to indicate density at 20 degrees centigrade and 15 degrees centigrade, respectively. Standard categories of surface tension are tabled in annex A, recommended stem diameters in annex B.

ISO 649-1:1981
$19.50