how to clean vacuum flask inside

Thermos bottles, also known as vacuum flasks, are a practical and convenient way to keep our favorite beverages hot or cold for extended periods of time. Whether you’re using your thermos for a hot cup of coffee on your morning commute, or you’re carrying a refreshing cold beverage with you during your outdoor activities, it’s important to clean your interior regularly. In this blog post, we’ll discuss some effective ways to keep your thermos clean and hygienic so you can enjoy the most delicious drink every time.

1. Gather the necessary supplies:
Before starting the cleaning process, gather all the supplies you will need. These include soft bottle brushes, dish soap, white vinegar, baking soda, and warm water.

2. Disassembly and pre-washing:
Carefully disassemble the different parts of the thermos, making sure to remove any caps, straws or rubber seals. Rinse each part with hot water to remove any loose debris or residual liquid.

3. Use Vinegar to Remove Odors and Stains:
Vinegar is an excellent all-natural cleaner that is effective at getting rid of stubborn odors and stains inside your thermos. Add equal parts white vinegar and warm water to the flask. Let the mixture sit for about 15-20 minutes, then shake gently. Rinse thoroughly with warm water until the vinegar smell dissipates.

4. Deep clean with baking soda:
Baking soda is another all-purpose cleaner that can eliminate odors and remove stubborn stains. Sprinkle a tablespoon of baking soda into a thermos, then fill it with warm water. Let the mixture sit overnight. The next day, use a soft bottle brush to scrub the interior, focusing on areas with stains or residue. Rinse thoroughly to make sure no baking soda remains.

5. For stubborn stains:
In some cases, you may experience persistent stains that require extra attention. For these stubborn stains, mix a tablespoon of dish soap with warm water. Use a bottle brush to gently scrub the affected area. Remember to reach all nooks and crannies inside the flask. Rinse thoroughly until all soap residue is gone.

6. Dry and reassemble:
After completing the cleaning process, it is essential to allow the thermos to dry thoroughly to prevent mold growth. Let all disassembled parts dry on a clean rag or on a rack. Make sure each piece is completely dry before putting them back together.

Regular cleaning of the inside of your thermos is essential for hygiene and flavor preservation. Following the simple steps outlined in this blog will help you maintain a clean and hygienic flask that delivers great-tasting beverages every time you use it. Remember that proper cleaning will not only ensure the longevity of your thermos, but will also help you enjoy hot or cold beverages throughout the day.