What precaution should you take when using glassware in the lab?

When using glassware in the lab, inspecting for cracks or defects before use is essential for maintaining safety. Glassware that is damaged, cracked, or improperly manufactured can break unexpectedly during handling or when subjected to temperature changes, resulting in spills, injuries, or exposure to hazardous substances. By taking the time to carefully examine each piece of glassware, you help ensure a safer working environment and prevent accidents that could endanger yourself or others in the lab.

Using only unwashed glassware does not promote safety, as residual chemicals or contaminants can react dangerously. Heating glassware without precautions could lead to thermal shock or explosions, especially if the glass is flawed. While plastic gloves can provide a barrier against certain chemicals, they do not address the fundamental risks associated with using damaged glass, which can compromise safety more significantly. Therefore, the proactive step of inspecting glassware is a crucial precaution in laboratory settings.