How to Clean a Vacuum Thermosflask That Has Stains at the Bottom1
How to Clean a Vacuum Thermosflask That Has Stains at the Bottom
Put some baking soda and vinegar into the bottom of your flask.
minutes
hours
Fill the flask with hot water.
minutes
minutes
Let the flask sit for a few minutes.
minutes
minutes
Scrub the inside of the flask with a bottle brush.
minutes
minutes
Pour out the mixture and rinse.
minutes
minutes