Laboratory fume hoods
How to secure laboratory operations with a compliant, high-performance, and chemical-risk-adapted laboratory fume cupboard?
Why the laboratory fume cupboard is critical equipment
In a laboratory, the fume cupboard is not just a ventilation device.
It is a collective protection device, essential for:
- operator safety,
- control of chemical pollutants,
- compliance with regulatory standards,
- continuity of research and production activities.
A poorly sized, poorly ventilated, or pollutant-unsuitable fume cupboard can lead to:
- exposure to toxic fumes,
- chemical or explosive risks
- regulatory non-compliance,
- operational shutdowns.
👉 That's why the design of the fume cupboard and its associated ventilation system must be conceived as a coherent whole.
🔬 What is a laboratory fume cupboard?
A laboratory fume cupboard is a ventilated enclosure designed to:
- capture pollutants at the source,prevent their spread in the room,
- protect users during chemical, biological, or physical manipulations.
It operates thanks to:
- a controlled face velocity
- a precisely calculated airflow rate,
- a reliable and resistant extraction system.
⚠️ Risks covered by a well-designed fume cupboard
✔️ Chemical risks
- Corrosive vapors
- Solvents
- Toxic gases
✔️ Biological risks
- Aerosols
- Volatile contaminants
✔️ Physical risks
- Exothermic reactions
- Splashes
- Potentially explosive atmospheres
👉 The fume cupboard is the primary safety barrier between the operator and the hazard.
📐 Face velocity and airflow rate: the heart of performance
Why face velocity is crucial
Face velocity is the speed of the air drawn in at the opening of the fume cupboard.
- Too low → pollutant leakage
- Too high → turbulence, discomfort, energy overconsumption
👉 A velocity generally between 0.4 and 0.6 m/s is often recommended, to be adjusted according to the application.
The role of airflow rate calculation
The flow rate depends on:
- the dimensions of the fume cupboard,
- the sash opening,
- the type of manipulation
- applicable standards.
💡 Precise calculation allows for:
- ensuring safety,
- optimizing energy consumption,
- guaranteeing regulatory compliance.
📜 Applicable standards and regulations for fume cupboards
Fume cupboards must comply with several standards depending on the country and sector:
- EN 14175 – Laboratory fume cupboards (Europe)
- ISO 14644 – Controlled environments
- OSHA / ASHRAE – International references
- Internal HSE requirements (industry, universities, R&D)
👉 A compliant installation relies as much on the fume cupboard as on the associated ventilation system.
🧠 The key role of the ventilation system
A high-performance fume cupboard cannot function correctly without adequate ventilation.
Critical points to master:
- flow stability over time,
- resistance to corrosive atmospheres,
- management of pressure losses,
- compatibility with existing networks.
This is where the choice of the extraction fan becomes strategic.
🧪 Why anticorrosion materials are essential
Effluents from fume cupboards often contain:
- acids.
- bases,
- aggressive solvents.
Ventilation systems must therefore be designed with resistant materials, such as:
- polypropylene,
- anti-corrosion technical plastics.
👉 This guarantees:
- the durability of installations,
- long-term safety
- reduced maintenance costs.
🛠️ The SEAT Ventilation Approach
SEAT Ventilation supports its clients from needs analysis to implementation:
Our approach is based on:
- analysis of specific risks
- precise flow calculations,
- selection of suitable solutions,
- recognized expertise in industrial and laboratory ventilation.
Each project is treated as a unique case, in conjunction with:
- regulatory requirements,
- site constraints,
- performance and safety objectives.
🔄 Typical applications of laboratory fume cupboards
- Chemical laboratories
- Research & R&D centers
- Universities and schools
- Pharmaceutical industry
- Chemical industry
- Food industry
❓ FAQ – Laboratory Fume Hoods
What is the recommended face velocity for a fume cupboard?
It depends on the application, but is generally between 0.4 and 0.6 m/s, with adjustment according to risks.
Can a fume cupboard operate without dedicated ventilation?
No. The fume cupboard must be integrated into a specifically designed extraction system.
What materials should be preferred for corrosive atmospheres?
Anticorrosion materials like polypropylene are highly recommended.
Is EN 14175 compliance mandatory?
It is highly recommended in Europe and often required in tenders.
📞 Need technical assistance?
Do you have a laboratory project, an existing fume cupboard to secure, or a new installation to design?
👉 Our teams support you in:
- flow calculations,
- regulatory compliance
- selecting appropriate ventilation solutions.
Contact SEAT Ventilation for a personalized technical study.
Besoin d’un accompagnement technique ?
Contactez SEAT Ventilation pour une étude technique personnalisée.
Nous contacter
