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Baking soda and vinegar – key to effective cleaning of vintage thermos

October 2nd, 2023

Cleaning vintage thermos could be a bit more complicated than other liquid containers. Low-cost and accessible ingredients such as vinegar, lemon juice, and baking soda should play an effective role in helping us get rid of the stains. Each cleaning solution only requires a few ingredients that you probably already have in your kitchen or bathroom.

Baking soda and vinegar

If a vintage thermos is neglected and a simple wash with dish detergent and water doesn’t work, other ingredients shall be called in. White vinegar and baking soda solution could easily help get rid of any stains.

Firstly, pour vinegar into the thermos and dump in one or two tablespoons of baking soda depending on how many cups the flask contains. Swish the thermos with the baking soda and vinegar inside, holding it over the sink in case the solution foams over. Do not place the cap on the spout.

When the foam of the mixture has subdued, pour hot water into the flask to fill it. Allow the cleaning solution to remain for around 10 minutes. To guarantee we get every stain and make the process more comfortable, scrub the inside of the vintage thermos with a bottle brush.

After that, pour out the mixture and rinse with hot water a few times, until it no longer scents of vinegar. This is not the most reliable way to clean a thermos but it works perfectly for your favorite water bottle

Vinegar and baking soda are the most reliable home remedies for a wide range of cleaning activities.

Descale a vintage thermos with lemon juice

The following solution for vintage thermos is also one of the best ways to clean the flask. Thermoses and other home appliances used on a daily basis can quickly accumulate build-up and stains. Applying a natural descaling method with lemon juice is a simple and safe way to wash away the dirt.

The first step is to mix the same portions of lemon juice and water and pour it in the thermos. Let it rest for approximately five minutes and scrub with a bottle brush or sponge. After that, drain the mixture and rinse it a few times to get rid of the lemon scent. This cleaning solution is also excellent for your coffee pot.


Lemon juice has a surprising effect on scales in a vintage thermos.

Items used daily can quickly get rusty, and this is particularly true with vintage thermoses, coffee cups and bottles. Instead of throwing out these favorite things, we can clean them by cheap, accessible and safe ingredients.

Should you have any questions, wish to share your ideas about vacuum flasks or request a quotation, please send us an email to: export@rangdong.com.vn.

Our website: vacuumflask.rangdong.com.vn

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