Letzter Unternehmensfall über Guangzhou Cleanroom Construction Co., Ltd. Zertifizierungen

Dispensing booths are essential equipment in pharmaceutical, pathology, and chemical laboratories. They provide a controlled environment for handling powders, reagents, or hazardous materials, ensuring operator safety and product quality. Understanding their working principle is important for laboratory managers, engineers, and technicians when selecting or using a dispensing booth.

1. Purpose of Dispensing Booth

Protect operators from exposure to powders, chemicals, or pathogens

Maintain the quality and sterility of materials

Minimize cross-contamination between batches or processes

2. Working Principle

a. Negative Pressure Containment

Most dispensing booths maintain a slight negative pressure relative to the surrounding environment. This ensures that any escaping powders or hazardous materials are drawn into the booth rather than spreading into the laboratory.

b. Laminar Airflow

HEPA-filtered clean air flows from the top down across the workspace, creating a contamination-free zone and preventing airborne particles from escaping.

c. HEPA Filtration

Captures fine powders, allergens, or biological contaminants

Ensures that exhaust air meets cleanroom standards

d. Ergonomic Design

Viewing windows provide clear visibility while maintaining containment

Gloves or arm ports allow safe manipulation without direct contact

Adjustable airflow and lighting improve accuracy during weighing or dispensing

e. Monitoring and Safety Systems

Pressure gauges display negative pressure status

Alarms detect filter blockage or airflow abnormalities

Interlock systems ensure safe operation conditions before use

3. Advantages

Enhanced Safety: Prevents operator exposure to hazardous powders

Material Protection: Maintains product purity

Regulatory Compliance: Meets GMP, ISO, and OSHA standards

Operational Efficiency: Ergonomic design reduces waste and improves precision

4. Applications

Pharmaceutical Production: Accurate weighing of active pharmaceutical ingredients (APIs)

Pathology Laboratories: Controlled handling of chemicals like formalin or xylene

Research Laboratories: Prevents contamination when handling powders or sensitive reagents

Conclusion

The working principle of a dispensing booth revolves around negative pressure control, airflow management, HEPA filtration, and operator protection. Choosing the right dispensing booth ensures laboratory safety, accuracy, and compliance, creating a clean, efficient, and reliable workspace.