|Place of Origin:||CHINA|
|Certification:||ISO14001, ISO 9001,CE,SGS|
|Minimum Order Quantity:||1 set or 1 unit|
|Packaging Details:||safety package for transporation|
|Delivery Time:||within 7 - 20 workdays after recevided the deposit|
|Payment Terms:||L/C, D/A, D/P, T/T, Western Union|
|Supply Ability:||10000 units per month|
|Name:||Ductless Fume Hood||Usage:||Fume Cupboard Design|
|External Size:||1500*800*2365mm||Inneral Size:||1290*635*820mm|
Laboratory Fume Cupboard Design Ductless Fume Hood Adjustable Air Speed
Laboratory fume hoods minimize chemical exposure to laboratory workers. They are considered the primary means of protection from inhalation of hazardous vapors, mists and particulate matter. It is therefore, important that all pntentiallty harmful chemical work be conducted inside a properly functioning fume hood.
The exhaust fan draws air from the room in which the hood is in through the hood opening and out through the ductwork. A fume hood is an intergral part of the building air handling system.
|work surface height||900mm|
|inflow air velocity||0.3-0.8m/s|
|exhaust duct||PVC, 4 meters|
|pipe strap||2 pcs|
Constant air volume principle
* Conventional hood: This term is used to describe a constant air volume (CAV) hood, an older, traditinally less elaborate hood design used for general protection of the laboratory worker. Because the amount elaborate hood design used for general protection of the laboratory worker. Because the amount of exhausted air is constant, the face velocity of a CAV hood is inversely proportional to the sash height. That is, the lower the sash, the higher the face velocity. CAV hoods can be installed with or without a bypass provision which is an additional opening for air supply into the hood.
* Conventional hood without a bypass : some conventional hoods do not have a provision for a bypass. Essentially, they consist of an enclosed cabinet with a connecton for an exhasut duct and a movable sash on the front.'
Conventinal bypass fume hood: the bypass fume hood is an improved variation on the conventional fume hood. The bypass is located above the sash facce opening and protected by a grille which helps to direct air flow. * The bypass is intended to address the varying face velocities that create air turbulence leading to air spillage. The bypass limits the increase in face velocity as the sash nears the fully closed position, maintaining a relatively constant volume of exhaust air regardless of sash position.
Other Type Lab Furniture For Reference