Agreed. However, it is not recommended to store the electrolyte solution for a long time. Now the stainless steel cup must at least be made of 304 stainless steel. 304 stainless steel is a kind of universal stainless steel material, rust resistance than 200 series of stainless steel material is stronger. High temperature resistance is also relatively good, can reach 1000-1200 degrees. 304 stainless steel has excellent corrosion resistance and good resistance to intergranular corrosion.
You can use a stainless steel cup to flush the electrolyte solution.
Under normal circumstances, lemon electrolyte water can not be packed in the cup of the thermos cup. Lemon and salt are corrosive, packed in a thermos cup here will be complementary food, thermos cup stainless steel lining. It will cause damage to the thermos cup.