How to identify lead-free glass

How to identify lead-free glass
1. Look at the logo

Lead glass generally contains potassium, which are mostly handicrafts and are marked on the outer packaging; while leaded glass contains lead, that is, crystal glassware commonly found in some supermarkets and street stalls, the content of lead oxide can reach 24%.

2. Look at the color

Lead-free glass cups have better refractive properties than traditional leaded crystal glass cups, and show the refractive performance of metal glass more perfectly; for example, some ornaments of various shapes, crystal wine glasses, crystal lamps, etc. are made of leaded glass Into.

3. Look at heat resistance

Glass cups generally can withstand very high temperatures, but generally have poor resistance to extreme cold and heat. Lead-free crystal glass is a glass with a high expansion coefficient, and its resistance to extreme cold and heat is even worse. If you use boiling water in a particularly cold lead-free glass, it will easily burst.

4. Be careful

Compared with lead-free crystal glass products, leaded crystal glass products are slightly heavier.

5. Listen to the sound

Beyond the metallic sound of the leaded crystal glass, the sound of the lead-free glass is more pleasing to the ears, rich in the reputation of “music” cups.

6. Look at resilience

Lead-free glasses are more tough than leaded crystal glasses, that is, impact resistance.


Post time: Apr-06-2021