Fume Hood

Ventilated enclosure pulling air past the worker so volatile and toxic chemistry never reaches the room.

Core Principles & Analysis

• Containment relies on steady face velocity, typically around half a metre per second through the sash opening.
• The sash is a safety shield: work is done with it as low as practical.
• Perchloric acid work demands a dedicated washdown hood, since its vapors form shock-sensitive residues.