Domestic Use
Vacuum flasks are used to maintain their contents (often but not always liquid) at a temperature higher or lower than ambient temperature, at ambient pressure of approximately 1 atmosphere (14.7 psi). Domestically and in the food industry, they are often used to keep food and drink either cold or hot. A typical domestic vacuum flask will keep liquid cool for about 24 hours, and warm for up to 8.
Some vacuum flasks include one or two fitted cups for ease of use with beverages, especially during travel or picnics.
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