How to distinguish whether a glass contains lead poisoning? 1. Look at the label: lead-free glass cups generally contain potassium and are mostly high-end handicrafts with labels on the outer packaging. Leaded glass cups, on the other hand, contain lead, which can reach 24% lead oxide content in crystal glassware found in some supermarkets and street vendors. Based on color, lead-free glass cups have better refractivity than traditional lead-based water glass cups, and more fully display the refractivity of metal glass; Some types of decorative items, crystal wine glasses, water lamps, and so on are made of lead containing glass. They are generally resistant to high temperatures, but their resistance to extreme cold and heat is generally poor. Leadless water glass belongs to glass with high coefficient of expansion, and its resistance to extreme cold and heat is even worse. If you use boiling water to brew tea in a particularly cold lead-free glass cup, it is easy to burst. 4. Weight: Compared with lead-free water glass products, leaded water glass products appear slightly heavier. 5 Listen to Sound: Beyond the metallic sound emitted by leaded water glasses, the sound of lead-free glasses is more pleasant and melodious, earning it the reputation of a music cup. 6. Look at toughness: Leadless glass cups have more toughness, i.e. impact resistance, than leaded water glasses.

Is the glass toxic?

In general, as long as you purchase glasses from legitimate shopping malls, the quality can still be guaranteed. Such glasses have no toxic side effects, and drinking water from glasses usually does not affect your health. We know that the most popular ones on the market are crystal glasses and regular glasses, including lead-free crystal glasses and lead-containing glasses. When choosing and purchasing glasses, it is important to look at the label, Look at the color and purchase a glass that has no toxic side effects.

What kind of glass is toxic?

At present, there are two main types of crystal glasses popular in the market: shipless crystal glass and lead-containing crystal glass. The former is generally potassium based and mostly high-end handicrafts with markings on the outer packaging; The latter contains lead, which is commonly found in crystal glassware in some supermarkets and street vendors, with an oxidation boat content of up to 24%

When cups made of lead containing artificial crystals are used to hold acidic beverages or other acidic foods such as alcohol, cola, honey, and fruit juice containing fruit acid, lead ions in daily life may form soluble lead salts that are ingested by the human body with the beverage or food, seriously endangering health. In addition, some glass cups are painted in various colors, although they are beautiful, they contain harmful or even highly toxic elements, such as heavy metals such as lead, chromium, gold, nickel, copper, manganese, and non-metals such as arsenic, fluorine, chlorine, and sulfur. In the industrial production process, these elements will be released and gasified, polluting the atmosphere and water sources, and causing harm to humans.