What makes glass the only material that is used in thermo flasks? - Quora

What makes glass the only material that is used in thermo flasks? - Quora

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Is there any alternative to glass or plastic bottles? - Quora

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My thermos flask worked fine for a few months until it suddenly

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The inside of my glass thermos has a spot that is not shiny. Is it

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How do vacuum flasks keep hot liquids hot, and cold ones cold? - Quora

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What kind of glass used for construction as a heat resistant? - Quora