Thermoses
Frequently Asked Questions
How does a thermos maintain temperature and what is its working principle?
A thermos maintains temperature thanks to a vacuum between its double walls. Because there is no air in this space, heat cannot be transferred to the external environment. The inner surface and the airtight lid block thermal radiation and evaporation, which keeps the beverage at its initial temperature.
What is the difference between a classic thermos and a travel mug (thermal mug)?
A classic thermos is designed to store larger volumes of liquid for a long duration (from 12 to 24 hours). A travel mug is more compact, designed for use on the go or in a car, and maintains temperature for a shorter period (from 4 to 8 hours).
Which material is better for the inner flask - glass or stainless steel?
A stainless steel flask is better if your priorities are durability, strength, and active travel. A glass flask is better for home or office use, as it perfectly preserves flavor and does not absorb odors.
On average, how long should a thermos retain heat or cold?
On average, a thermos should retain heat for 12 to 24 hours, and cold for even longer - approximately 24 to 48 hours.