Fume hoods are critical laboratory equipment designed to protect users from hazardous vapors, gases, and particulates. They function as ventilated enclosures that capture and exhaust contaminants away from the breathing zone, ensuring a safe research environment.
Core Functions
1. Personnel Protection: Prevents inhalation/contact with toxic substances.
2. Environmental Control: Contains spills and prevents cross-contamination.
3. Process Integrity: Maintains stable conditions for sensitive experiments.
Key Working Principle
– Face Velocity: Airflow through the sash opening (typically 0.3-0.5 m/s) captures contaminants.
– Exhaust System: Contaminated air is expelled outdoors or filtered (ductless models).
-Bypass Airflow: Maintains consistent velocity when sash height changes.
Critical Selection Factors
1. Chemical Hazards: Dictates construction materials (stainless steel, PP, epoxy).
2. Application: Distillation, perchloric acid, or radioisotope work require specialized hoods.
3. Energy Efficiency: VAV systems reduce operational costs by 30-50%.
4.Compliance: Must meet EN 14175 or ANSI/ASHRAE 110 standards.
Operational Best Practices
– Maintain work area 15cm inside hood
– Keep sash closed when not in use
– Annual certification of airflow/containment
– Never use for chemical storage
Why Proper Maintenance Matters
Faulty hoods increase exposure risks by 70%, Regular testing ensures:
– Consistent face velocity
– Filter efficiency (for ductless units)
– Structural integrity
For certified Fume Hood solutions in Indonesia, PT Wholesome offers expert consultation, installation, and maintenance services. Contact us for laboratory safety compliance and performance-verified equipment!