| How to identify the capacity volume The depth of the inner tank is basically the same as the height of the outer shell, and the capacity (with a difference of 16-18MM) is consistent with the nominal value. Some low-quality vacuum flasks add sand and cement blocks to the cup to make up for the missing weight. Misunderstanding: A heavier cup (pot) is not necessarily good. How to identify the stainless steel type There are many types of stainless steel materials, like 201#,301#,304# and 316#. But only 304#(18/8) is food grade stainless steel. 18/8 means that the composition of this stainless steel material contains 18% chromium and 8% nickel.The material that meets this standard is a green product that meets the national food-grade standard. , The product is rust-proof and corrosion-resistant. The color of the ordinary stainless steel cup is whitish and dark. If it is immersed in 1% salt water for 24 hours, it will produce rust spots. Some of the elements contained in it exceed the standard and directly endanger human health. How to identify the plastic Lid quality Material parts identification method-food-grade new plastics are characterized by low odor, bright surface, no burrs, long service life and not easy to aging. Ordinary plastics or recycled plastics are characterized by big smell, dark color, many burrs, and plastics are easy to age and break easily. How to identify the leaking proof performance After adding water to the cup, tighten the cork and lid in a clockwise direction, place the cup flat on the table, and there should be no water leakage; the screwing of the lid and the mouth of the cup should be flexible, no gap. How to identify the thermos performance Simple identification method for empty heat preservation performance-pour boiling water into the thermos cup and turn the cork or lid clockwise for 2-3 minutes and then touch the outer surface of the cup with your hand. If the cup body has obvious warming phenomenon, it means The product has lost its vacuum and cannot achieve a good insulation effect. |
Inspection Tips of Thermos Cups on Quality Indentify
12/05/2021
