Fume hoods, ducted or filtered, should only be installed in fully exhausted labs with minimum dilution ventilation rate of 6 to 8 air changes per hour. Ventilation codes do not allow general return or ...

So after being inspired by the countless DIY fume hoods, like this one, he decided to try his hand at it. A sale on an electric leaf blower inspired a Saturday afternoon of hacking. The leaf ...

Hemco Corporation's Vented Demonstration Hood is designed to enhance classroom experiments and demonstrations with clear, all-around visibility. This hood allows instructors to perform ...