Fume Hood Ventilation requirements
Fume Hood Ventilation requirements
(OP)
Fume hoods are used in wet chemistry operations to prevent exposure to vapors . There are many guidelines on what is the minumum face velocity that is required for protection (e.g. 100 ft/min . 80 ft/min). Does anyone have any experience or references of what meets the minumum requirements for safe operations ?





RE: Fume Hood Ventilation requirements
Some good resources for fume exhaust include the book "Industrial Ventilation," published by the American Conference of Governmental Industrial Hygienists, and the ASHRAE Handbook Chapter 13.
RE: Fume Hood Ventilation requirements
RE: Fume Hood Ventilation requirements
The American Conference of Governmental Industrial Hygienists Gives the following requirements:
Exhaust Volume
1. 100cfm/sq ft of door area for nuisance, corrosive materials. Moderate toxicity materials, tracer quantities of radioisotopes.
2. 150cfm/sq ft of door area for High toxicity materials (TLV equal to or less than 0.2 mg/cubic meter), Low MPC radioactive materials.
3. Glove Box (Dry Box) for very high toxicity materials. (Pathogenic microorganisms).
RE: Fume Hood Ventilation requirements