S.M. Scientific Instruments (P) LTD

Horizontal Laminar Air Flow Cabinet SMI-156H

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Horizontal Laminar Air Flow Cabinet SMI-156H



We offer a comprehensive range of high performance horizontal Laminar Flow Clean Air Cabinets. It has a modular construction, combining aesthetic appeal with functional utility and efficiency. These are designed to meet the filtration, illumination, noise & vibration requirements, providing air to meet class 100 (class I) conditions, to the extent applicable.

These laminar Flow configurations find extensive application in Scientific, Medical and Industrial application where a localized high quality clean working environment is essential. These are designed to provide an atmosphere free from airborne particles with laminar air flow on the work table. These are also ideal for microbiological manipulations, work with bioassays sterility testing & research work, vial filling & bunging operation in parenteral units & for general dry-processing work in semiconductor industry etc. 


All Laminar Flow Clean Air cabinets are basically constructed with an outer body of Mild Steel duly powder coated. The inner work table is made of stainless steel. The side panels have windows of thick acrylic for viewing purposes. 

The front of the cabinet is provided with a transparent acrylic door mounted on hinges which is very easy to use.

Air Flow and Filtration

Laminar Flow principle involves double filtration of air. Atmospheric air is drawn through pre filter and is made to pass through highly effective HEPA (High Efficiency Particulate Air) filters having efficiency rating as high as 99.99% with cold DOP and 99.97% with hot DOP, thus retaining all airborne particles of size 0.3 micron and larger. Double filtered air blows in laminar flow through the work table at designed velocity of 70 FPM-110FPM(Avg. Air flow velocity 90 FPM)

Blower Motor Assembly

Duly balanced, direct drive highly efficient centrifugal blower units sized to provide adequate air flow volume over the entire surface of HEPA filter. These are directly coupled to an inbuilt motor and operate with minimum noise level i.e. lower than 65 db on scale and Vibration less than 2.5 um.

Lighting: The work area is properly illuminated by diffused, glare free fluorescent light.

UV Germicidal Lamp: An in built UV germicidal lamp helps in killing of bacteria and other microorganisms. 

Pressure Manometer: The instrument is provided with a pressure manometer which indicates the air pressure.

Power Requirement: The instrument is designed to operate on 220V AC Supply.

Optional Accessories: – 

  • Cock for gas, air or vacuum
  • Outer body made of highly polished thick stainless steel
  • Motorized Sliding door

Spare Accessories:–

  • HEPA Filter
  • Pre Filter

Product Size

Horizontal Model






Working Area  

2’ X 2’ X 2′

3’ X 2’ X 2′

4’ X 2’ X 2′

6’ X 2’ X 2′

8’ X 2’ X 2′

Size of HEPA filter

2’ X 2’ X 6”

3’ X 2’ X 6”

4’ X 2’ X 6”

3’ X 2’ X 6”

4’ X 2’ X 6”

No. of HEPA filters 






No. of Pre filters 







1 X 20 W

1 X 20 W

2 X 40 W

2 X 40 W

4 X 40 W

Custom built sizes as per the customer’s requirement can also be manufactured on request.

Product Brochure

Product Brochure Link here