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Sigma Scientific LLC manufactures standard & custom sized bio-assay wind-tunnels for any application.  

bioassay wind tunnel



  1. All of Sigma Scientific’s wind-tunnels have one flanged end where the blower draws the air in through the tunnel.

  2. Both ends of the wind tunnel are covered with diffusing and filtering media, that are placed and compressed using a series of bolts.

  3. The air-in side has several layers of activated charcoal-impregnated fiber, which when compressed serves two purposes:  

  • As an air diffuser to develop high back-pressure on one side and produce a uniform / laminar flow through the media as the air passes to the low pressure side.

  • As a hydrocarbon filter to remove ambient VOC’s from the bioassay environment.

  1. These wind-tunnels can have any number of access ports or doors and are able to be completely disassembled for alternating the configuration. 

  2. Both sliding access doors open to nearly half the length of the tunnel on both sides allowing maximum access and easy interior cleaning. 

  3. All of Sigma Scientific’s tunnels use a remotely connected high speed AC or DC blower motor which can cover wind velocities from 10 to 150 cm/sec.  Higher velocities are available. 

  4. The motor is connected to the tunnel via a flexible aluminum duct which minimizes noise from the blower and isolates vibrations.

  5. All Sigma Scientific tunnels come equipped with variable dampers allowing precise wind control.



Additional side door access ports are available and cost $200 per door and can be placed anywhere on the tunnel. Additional accessories, ducting & custom options are available – Call for pricing.


Shipping Information


Shipping is FOB Micanopy, FL.  Containers are custom built for each wind tunnel – Call for Pricing $$


Other Non-Standard Sizes are available – Call for pricing $





All Wind-Tunnels listed below are fully assembled and include all parts & labor, activated carbon air inlet filtration system, (2) large sliding top front & rear access door panels (3) volatile (odor) source ports, 4" or 6"diameter air exit duct and 10 ft. of flexible aluminum ducting.


Part Number SSWT-12X12

12" x 12" x 4 ft. OAL Bioassay Wind-Tunnel, 6" duct $3,300.00


Part Number SSWT-16X16

16" x 16" x 5 ft. OAL Bioassay Wind-Tunnel, 6" duct $3,890.00


Part Number SSWT-20X20

20" x 20" x 6 ft. OAL Bioassay Wind-Tunnel, 6" duct $4,400.00


P/N# Part Number SSWT-24X24

24" x 24" x 7 ft. OAL Bioassay Wind-Tunnel, 6" duct $5,500.00


Shipping containers are custom built for each wind tunnel – Call for Pricing $$

Shipping is FOB Micanopy, FL

Other Non-Standard Sizes are available – Call for pricing $$



Customer may supply their own or separately purchase electric blower motors. 


Features & Specifications:


  • All blower motors are separately mounted on a floor stand.

  • Include a 4" to 6" diameter inlet port for connecting flex ducting to the main wind-tunnel.

  • Come factory pre-wired for 120V or 240V 50/60Hz AC.


Electric blower (suction) motor for 12"-to-24" cross-section Wind-Tunnels capable of providing 0-to-5 MPH (225 cm/sec) wind-velocities. Shaded-pole blower capable of moving up to 1,800 CFM (51,000 LPM) max. at 0.5" SP.


4-choice(Multi-Choice/Four-Arm)Insect Olfactometer, Y-Tube Olfactometers, Volatile Collection Trap, Flying Insect Wind Tunnel, Clean Air Delivery Systems

Tel. 1+352.505.5793  Micanopy, FL USA

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