Flask (unit)

Unit of mass used for mercury

Flask is a British unit of mass or weight in the avoirdupois system, used to measure mercury.[1][2][3][4][5] It is defined as 76 pounds (34 kg).[1] Near room temperature, a flask of mercury occupies a volume of approximately 2.5451 litres (86.060 US fl oz; 89.575 imp fl oz).[6]

## Conversion

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1 flask (mercury) ≡ 76 lb[1]

1 flask (mercury) ≡ 34.47302012 kg

## References

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1. ^ a b c Cardarelli, F. (2003). Encyclopaedia of Scientific Units, Weights and Measures. Their SI Equivalences and Origins. London: Springer. p. 37\. ISBN 978-1-4471-1122-1.
2. ^ "Nearly full flask, a sample of the element Mercury in the Periodic Table". periodictable.com. Retrieved 2019-05-18.
3. ^ "injection flask". TheFreeDictionary.com. Retrieved 2019-05-18.
4. ^ Geological Survey Bulletin. U.S. Department of the Interior, Geological Survey; Washington, D.C. 1983.
5. ^ US 3587904, Harris, George W. & Good, Elmer H., "Stackable mercury flask", published 1971-06-28
6. ^ At 20°C/ 68°F listed density of 13545 kg/m3 = 13.545 kg/L (14.1298 oz/fl oz (US))