Glass purchasing skills
2022-04-20
1、 High borosilicate glass
Compared with other materials, the basic materials and manufacturing process cost of high borosilicate glass are more expensive. It is made by using the conductive characteristics of glass at high temperature and heating inside the glass to realize glass melting. It is processed by advanced production technology. High borosilicate glass does no harm to human body. And it is specially used for glass turntable, observation window of drum washing machine, boiled water teapot, teacup, etc. there is no lead material.
Whether children or the elderly, high borosilicate glass is applicable, with a relatively high safety factor. It will not burst even in sudden cooling and heat, and has particularly good high temperature resistance. It is also widely used in chemical industry, aerospace, military, family, hospital and other fields.
2、 Crystal glass
Crystal glass is mainly produced in Western Europe. It is made of silicon and lead oxide. Its material is crystal clear and shiny, so it is named crystal glass. Solid glass is also divided into lead-free crystal glass and lead-containing crystal glass. Next, let's share a selection method of lead-free glass.
1. Lead free crystal glass
① Look at the color - lead-free crystal glass has better refraction and brighter color;
② Weigh the weight - leadless crystal glass is slightly lighter than leaded crystal glass;
③ Listen to the sound - the lead-free glass has a crisp metal sound, clear and distant;
④ Look at the content - lead-free glasses generally contain potassium and 100% do not contain lead and barium. They are healthy and environment-friendly. Most of them are high-grade handicrafts with marks on the outer package;
⑤ Look at toughness - lead-free crystal glasses are more resilient and impact resistant than leaded crystal glasses.
If you want to choose lead-free from the crowd, you should "watch, hear and ask" the crystal glass like a doctor.
1. Leaded glass
Lead containing glass should not be used as far as possible, because its lead oxide content reaches 24%, and articles with large lead content are not recommended to be used, because it is very harmful to human health. The long-term use of leaded glass will cause indelible damage to the body, mainly to the nerve, hematopoietic system and kidney, damage the bone hematopoietic system, cause anemia, brain hypoxia, brain edema and other problems, and may cause abnormal movement and sensation.
Therefore, if conditions permit, you can give priority to practical high borosilicate and shiny and safe lead-free crystal glass, and never choose leaded glass. After reading the article, you should also check whether the utensils at home with food are rich.
