[China Glass Network] Due to its advantages of easy cleaning, cleanliness, etc., some glass tableware and cooking utensils have been favored by more and more consumers, and more catering industry has gradually favored glass tableware. Especially in the current, hot summer, glass tableware is highly sought after because of its visual refreshing. How to choose safe and reliable glass tableware? Here is Jin Zhenshan to introduce to you: Industry experts have warned that the purchase of crystal glass tableware should pay special attention. Because the content of lead oxide in crystal products is as high as 20%-30%, it is used to hold water, generally does not cause lead poisoning, but if used as a cup of wine, the wine will dissolve the lead in the crystal glass products, the time is more The longer the amount of dissolution. Similarly, when using crystal glass containers for foods, especially cola, honey, and juice-based acidic foods, lead ions are also prone to form soluble lead salts that are ingested by the human body with beverages or foods, which is a serious health hazard. Therefore, crystal glass products are called "beautiful killers" by scientists.
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Experts suggest that the purchase of crystal glass tableware can distinguish between ordinary glass, lead-containing crystal glass and lead-free crystal glass by sound, feel and appearance. Ordinary glass products have dim color, poor refractive index, rough workmanship, poor hand feeling, and even some bubbles in some places, and the sound is dull. Compared with ordinary glass products, crystal glass products have bright color, strong refractive index, exquisite workmanship and good hand feeling. They look like crystals, and they have a crisp metal sound. Lead-containing crystal glass products are slightly thicker than lead-free crystal glass products.
In addition, ordinary glass tableware is not completely reliable, and it will cause "mold" in a specific environment where water is immersed for a long time. This is because the glass is eroded by water for a long time, and sodium silicate in the glass reacts with carbon dioxide in the air to form white carbonic acid crystals, which are harmful to human health. The method of removing these carbonic acid crystals is to wash with an alkaline detergent. Although ordinary glass may contain a small amount of lead, it will not cause health damage under normal use. If you are not at ease, let the ordinary glassware be put in vinegar water before the previous use to make the lead precipitate. For acidic beverages or foods, it is better to use ordinary glassware and avoid using leaded glassware. 