Flask is a British unit of mass or weight in the

avoirdupois system The avoirdupois system (; abbreviated avdp.) is a measurement system of weights that uses pounds and ounces as units. It was first commonly used in the 13th century AD and was updated in 1959. In 1959, by international agreement, the defini ...

, used to measure mercury. It is defined as . Near

room temperature Colloquially, "room temperature" is a range of air temperatures that most people prefer for indoor settings. It feels comfortable to a person when they are wearing typical indoor clothing. Human comfort can extend beyond this range depending on ...

, a flask of mercury occupies a

volume Volume is a measure of occupied three-dimensional space. It is often quantified numerically using SI derived units (such as the cubic metre and litre) or by various imperial or US customary units (such as the gallon, quart, cubic inch). Th ...

of approximately .At 20°C/ 68°F listed density of 13545 kg/m³ = 13.545 kg/L (14.1298 oz/fl oz (US))

Conversion

1 flask (mercury) ≡ 76 lb 1 flask (mercury) ≡ 34.47302012 kg

References

{{Reflist Units of mass Customary units of measurement Standards of the United Kingdom