Old glass thermos - how to tell if it's intact and safe? (meaningless drivel forum at permies)

Old glass thermos - how to tell if it's intact and safe? (meaningless drivel forum at permies)

My childhood memory says there

The inside of my glass thermos has a spot that is not shiny. Is it safe to use? - Quora

How much better is an old fashioned glass thermos, than the common metal ones of today? - Quora

The secrets behind purple bottles

Creative uses for Broken Fridge/ Freezer Do you really need one? (meaningless drivel forum at permies)

Creative uses for Broken Fridge/ Freezer Do you really need one? (meaningless drivel forum at permies)

Rose, Blog

Why should a thermos flask not be filled to the brim? - Quora

Holiday Gift Making (meaningless drivel forum at permies)

Creative uses for Broken Fridge/ Freezer Do you really need one? (meaningless drivel forum at permies)

Old Thermos - what's it worth? : r/BuyItForLife

using recycled materials in frame construction (natural building forum at permies)

Definitive test of having tempered glass?

Just found this Thermos in storage, would it be safe to use? I'm worried the old plastics n metal might not hold up :(( : r/BuyItForLife

Preparing for a short-term power outage (survival forum at permies)

How to identify the real and the fake insulated water bottle - Knowledge - Guangzhou Diller Daily Necessities Co.,Ltd