How to distinguish between leaded and lead-free glasses
Compared to cups made of other materials, glass cups pose the least risk to human health, so everyone loves to choose and use them.
Just some glasses contain lead, and if lead is excessive in the human body, it is harmful to human health. So how can lead and lead-free glasses be distinguished?
1. Pick up a glass and tap it with your fingers, the lead-free glass will make a crisp sound, while the sound of a lead-containing glass is relatively dull.
2. The weight of lead-free glasses is slightly heavier compared to lead-containing glasses. A glass of the same size, which is heavier, usually belongs to a leaded glass.
3. In terms of color, lead-free glass cups are more transparent and have excellent refractive index compared to lead-containing glass cups. However, lead-free glass cups may not have enough transparency and always give people a feeling of blackness.
4. In addition, it is also important to check the heat resistance of the glass. Leaded glass cups are very prone to cracking and can crack at the slightest bit of hot water. The heat resistance of lead-free glass cups is many times better than that of leaded glass cups.
It is recommended that everyone use lead-free glassware in daily life, try to avoid containing acidic drinks or food, and preferably use regular glass cups. Using lead-free crystal glass as wine glasses and kitchen utensils is safer and more reliable.