Flask is a British unit of mass or weight in the

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

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

room temperature Room temperature, colloquially, denotes the range of air temperatures most people find comfortable indoors while dressed in typical clothing. Comfortable temperatures can be extended beyond this range depending on humidity, air circulation, and ...

, a flask of mercury occupies a

volume Volume is a measure of regions in 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) ...

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