[header] How to clean a vacuum thermosflask that has stains at the bottom [title] Put some baking soda and vinegar into the bottom of your flask. [step] Pour about half a cup (120ml) of distilled white vinegar into your stained flask. Then, shake in approximately one tablespoon (15ml) of baking soda for every cup the flask holds.
[header] How to clean a vacuum thermosflask that has stains at the bottom [title] Put some baking soda and vinegar into the bottom of your flask. [step] Pour about half a cup (120ml) of distilled white vinegar into your stained flask. Then, shake in approximately one tablespoon (15ml) of baking soda for every cup the flask holds.
[substeps] Use a yellow or purple aquarium water bottle, but use a regular water bottle, as your mouth cannot see the vinegar. [title] Use a white wine vinegar dish soap and water. Cover the top of the flask with the baking soda. For extra effect, add some coffee grounds. The vinegar and baking soda mixture will froth up, so be sure to put the flask in the sink when you combine them. [substeps] Baking soda and vinegar are excellent at killing germs and wearing down stains when acting together. [title] Dump vinegar into the bottom of the flask. [step] Pour three tablespoons (29.9 ml) of distilled white vinegar into the bottom of your flask.