Fume Hood System

The Fume hoods are functioning on very basic principal of containment. It is basically designed for safety of the personnel working within the lab by maintaining negative pressure inside the hood compared to that within the lab. The fume hood performs effectively & safely at the face velocity of 100 fpm (or 0.5mtr/sec) at defined sash opening. The hoods will have double skinned construction to make it safer. It comprises the electrical components and utilities as per the need of experiment. It consists of standard vertically operated counter balanced toughened glass sash or combination of horizontal & vertical sash opening. Need based choice between steel and wooden fume hood is always available.

Bench Mounted Fume Hood:

Conventional: (Constant Volume):

This is a proven model operated on Constant Volume principle. In this model, majority air enters through the opening of sash. Exhaust volume remains constant. This is very popular and economical model used in general low hazard applications.

Constant Volume by Pass Air:

This type of Fume Hood has the same design as above but will have slots or louvers on the top front panel. Hence, the air bypasses through the slots as the sash is lowered down or closed. There is a sure intake of air either in closed or open sash position. This redistribution of air prevents high velocity streams inside the hood, which may cause turbulence and compromise chemical fume containment. 

 Auxiliary Air Inlet: 

This model is the most preferred in the Air-conditioned Lab. This model permits atmospheric air to create an air curtain in front of the sash opening which will prevent conditioned air to be exhausted to much extent. Thus it economizes the energy consumption.

 Walk-in Type:

The Fume Hood is designed to work with the taller assemblies like 20Ltr, 50Ltr etc. where scientist walks-in to perform bigger assembly applications. The sash in this model operated horizontally.