The Thermos Cup Cannot Be Filled With Acidic Drinks (such As Lemon Juice)

The insulation principle of the thermos cup is generally vacuum and stainless steel, which can reduce heat transfer as much as possible to achieve the purpose of insulation. Therefore, the inner container of the thermos cup is mostly made of stainless steel. Stainless steel is resistant to high temperatures and is not easily deformed, but it is afraid of strong acid. However, beverages such as lemon juice and sour plum soup have more acidic substances, which can easily damage the stainless steel inner tank and cause poor heat preservation performance. If the quality of the thermos cup itself is not good, it may even cause some heavy metals to precipitate out, causing great damage to the human body.