How can you identify tempered glass?

Tempered glass can be identified by the presence of a symbol or etching in one corner, which indicates that it has undergone a specific heat treatment process to increase its strength and safety. This etching or symbol typically represents compliance with safety standards and indicates that the glass has been manufactured to withstand greater stress than standard glass.

Additionally, this marking serves as verification for building codes and regulations, ensuring that the glass meets necessary safety standards for use in constructions, such as windows and doors. This is crucial for fire safety, as tempered glass is often used in situations where impact resistance and thermal stability are required.

The other answers do not accurately reflect identifying characteristics of tempered glass. For example, while tempered glass may be thicker than some standard glass, its thickness is not a definitive identifier since the thickness can vary widely among different types of glass. A rough edge is not a typical characteristic of tempered glass, as it is usually finished to have a smooth edge. Finally, the absence of markings or complete clarity does not identify tempered glass, as regular glass can also be clear and unmarked without undergoing the tempering process.