Final answer:
CVEs are specialized hoods designed for pharmaceutical preparation tasks that involve handling powders, ensuring safety and preventing contamination.
Step-by-step explanation:
Containment Ventilated Enclosures (CVEs, often called powder containment hoods) are devices used only for pharmaceutical preparations. These specialized hoods are designed to provide protection to the user, the environment, and the product from particulate and cross-contamination when handling potent powders and particulates during processes such as weighing, dispensing, or similar tasks. CVEs operate by using HEPA filters and air management systems to prevent the escape of powdery substances into the work environment.
These devices provide a controlled environment for handling hazardous substances and preventing their release into the surrounding area. CVEs are commonly used in laboratory settings, particularly in the field of chemistry, to ensure the safety of students and researchers when working with potentially dangerous materials.