Use a Thermos Bottle Correctly! Explain Confusing Things Like How to Wash and More

Staying hydrated is important for your health! Many people bring a thermos bottle to school or work and they enjoy their favorite drinks. However, have you ever wondered if it’s good to put any kind of beverage in a thermos bottle or how to clean it properly?
Therefore, I’ll explain those questions based on “Surprisingly Unknown!? Thermos Bottle Trivia”, a guide published by Thermos, which is a leading global manufacturer of insulated bottles.

Is It Good to Peel Off the Protective Sheet Under the Thermos Bottle?

A thermos bottle has a protective sheet to the bottom. Don’t peel it off!
Stainless steel insulated bottles, like thermoses bottles, have a double-layer structure consisting of an inner and outer bottle. There is a sealing hole used to create a vacuum at the bottom.
Also, the thermos bottle is placed inside a large vacuum chamber, where the pressure is reduced to an extremely high vacuum level of less than 1/10,000,000 of an atmosphere. In this state, the sealing hole at the bottom is closed with a sealing material, which is how the vacuum insulation is formed.
The protective sheet is attached to the bottom of the thermos for preventing external impacts from directly affecting the sealing material. Meanwhile, a metal plate is welded to the bottom to prevent water from entering for dishwasher-safe bottles.

Is It Okay to Put Any Drink in a Stainless Steel Thermos Bottle Made?

People carry a thermos bottle since they can enjoy their favorite drinks anytime. Nevertheless, do you know that some beverages should not be put in a stainless steel thermos?
One of them is “carbonated drinks”. The carbonation produces gas, increasing internal pressure, which can cause the lid to pop open forcefully and potentially lead to injury, so you mustn’t put in.
Another beverage is “juices with pulp”. Pulp can clog the drinking spout, so manufacturers don’t recommend using a thermos for these types of drinks.
Finally, “milk beverages” should be avoided for a long time, as they can spoil quickly inside the thermos.

What’s the Correct Way to Wash a Thermos Bottle?

Even if you wash a thermos bottle completely every day, you might notice that dirty over time, and sometimes, uncomfortable odors linger. You should remember the proper way to wash it.
The basic rule for washing a thermos bottle is to use “natural detergent”. Since stainless steel can get scratched, you should avoid using steel wool or abrasive sponges. Instead, use a soft sponge or a net sponge.
If you are worried about tea stains or odors, you might think of using chlorine bleach. But this should not be used on stainless steel thermoses because the main body or any parts contain metal, chlorine bleach can cause rust or damage. Instead, you can use “oxygen bleach” to safely remove stains and odors.

<The Correct Way to Remove Tea Stains>
○ Scrub with natural detergent
× Use chlorine bleach
○ Use oxygen bleach
× Scrub with a scrubbing brush
× Continue using the thermos without removing tea stains
★ Click here for details on the correct way to wash it.

Maintaining a thermos bottle clean is really important for keeping it for a long time! Also, be careful to use it accurately such as not removing the protective sheet or avoiding certain beverages. If you do them, you’ll surely use it comfortably than usual!

Information provided by Thermos