What is a key characteristic of exam gloves used in laboratories?

The correct answer highlights the fact that exam gloves have a leak rate of up to 3 percent, which acknowledges that while they are designed to protect against contamination and exposure to biological materials, they are not completely impervious. This statistic reflects the importance of understanding the limitations of personal protective equipment (PPE) in laboratory settings. Exam gloves are often used for tasks that require a balance between dexterity and protection, but users must be aware that there is a small possibility of leaks—underscoring the need for training and safe handling practices.

In choosing appropriate gloves, it's essential to consider that they are tested for performance, and while a low leak rate can suggest a degree of safety, it emphasizes the necessity of following proper protocols, such as regular replacement of gloves during procedures to minimize risk. This understanding helps to ensure that laboratory personnel remain safe while handling potentially hazardous materials.

The other options misrepresent the characteristics of exam gloves; for instance, stating that they are 100 percent leak-proof is inaccurate, as no protective equipment can guarantee absolute safety. Similarly, while exam gloves offer some level of protection against chemicals, being designed solely for that purpose is misleading, as they are primarily intended for biological safety. Lastly, while it is a best practice to replace