The "beaker" is a common laboratory glassware, primarily used in chemical, biological, and other experiments. Here are the key features of a beaker: 

**1. **Shape**- Typically cylindrical, with the top slightly wider than the bottom (conical design), and the side wall marked with scale lines (with lower accuracy).- The mouth of the cup features a "spout" design for pouring liquids.

2. **Material**- Glass beaker: High temperature resistant (such as borosilicate glass), can be heated directly.