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Common Mistakes in Laboratory Ventilation and How to Avoid Them

时间:2025-07-02

分类:News

Poor ventilation in laboratories can lead to serious risks such as cross-contamination, exposure to hazardous substances, and reduced equipment performance. This article highlights the most common mistakes in lab ventilation systems and provides clear solutions to improve safety and compliance.

1. Improper hood placement
Fume hoods are often installed near windows, in poorly ventilated corners, or directly facing doors. These positions disrupt airflow and reduce the effectiveness of air extraction.
Solution: Install fume hoods away from airflow disturbances and follow laminar flow recommendations based on hood type and lab layout.

laboratory ventilation

2. Lack of air compensation system
A powerful exhaust without an air compensation system creates negative pressure in the lab. This can lead to uncontrolled air entry, backflow, and temperature imbalance.
Solution: Design a balanced airflow system with proper supply air. Use diffusers or ducts to maintain equilibrium.

3. Neglecting filter and duct maintenance
Clogged filters or dirty ducts reduce ventilation efficiency and may release contaminants back into the workspace.
Solution: Establish a regular maintenance schedule. Use HEPA or activated carbon filters suited to the chemicals in use.

4. Conflicting airflow systems
Running air conditioning, fume extraction, and general ventilation separately without coordination often causes turbulence and ineffective contaminant removal.
Solution: Integrate all airflow systems into a single design. Ensure air direction and pressure are consistent and controlled.

5. Ignoring compliance with standards
Many lab ventilation setups do not meet international or national safety standards such as ISO 14644 or EN 14175. This increases legal and safety risks.
Solution: Work with certified lab designers. Conduct audits and update non-compliant systems.

6. One-size-fits-all approach to ventilation
Different labs have different ventilation needs. A biology lab and a chemical lab cannot use the same configuration.
Solution: Assess risks for each lab type. Select ventilation equipment accordingly, such as ducted hoods, filtered hoods, or ventilated storage cabinets.

For customized lab ventilation solutions and expert support, feel free to contact Huajusheng Laboratory System Equipment Co., Ltd.

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