Ventilated Balance Enclosures

Low Velocity Fume Hoods
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The PLAS-LABS’ HEPA filtered ventilated balance enclosures are the latest in self contained laboratory processing products. The VBE Series is ideal for workingwith fine powders, and chemical and biological products.

These portable ventilated balance enclosures include top mounted HEPA/Blower filtration. They are set-up to circulate the internal atmosphere into the lab, attach to our 900-EXTRACT Extraction Unit, or attached to your house exhaust system.

The smooth curved, or rounded, ABS™ airfoils provide gentle, unobstructed air flow through rear baffles and through the top mounted HEPA filter.

The ventilated balance enclosure provides minimal laboratory space and minimal energy usage.


Watch an informative video on the Low Velocity
Fume Hoods here.

Standard Features of the Ventilated Balance Enclosures:

  • Constructed of optically clear 3/8” jeweled acrylic plastic.
  •  Front viewing sash with multiple air foils for higher containment and draft deflectors.
  • Includes phenolic base with superior chemical resistance and provides higher analytical balance stabilization. Low vibrations. The black base allows for easy powder detection.
  • Electrical cord outlet port. 
  • Adjustable front draft protection.
  • Side blank plate for optional Bag-In / Bag-Out port (pn 900-VBE/BIBO)
  • Each balance enclosure includes face velocity alarm.

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Inner work surface:
23.5" wide x 21" deep

Outside dimensions:
24" wide x 28" deep x 41" high


Inner work surface:
35.5" wide x 21" deep

Outside dimensions:
36" wide x 28" deep x 41" high


Inner work surface:
47.5" wide x 21" deep

Outside dimensions:
48" wide x 28" deep x 41" high

Electrical requirements

silhouette of the united states
North American
Model Number:  900-VBE Series
Electrical Requirements:  115-120 Volts, 60 Hz. 12 Amp
silhouette of the globe
Export Model
Model Number:  900-VBE/Exp Series
Electrical Requirements: 220-240 Volts, 50 Hz. Amps will vary based on country. 

HEPA Filters: Aluminum frame with upstream/downstream polyurethane gasket. 100 mm thick pleat requires fewer filter change outs and increased longevity. Rate 99.995% @ 0.3 microns (H14). Easy HEPA filter replacement.

Blowers: High efficiency backward curved impeller. Variable speed controller. IP44 protection as per EN60034-5. Ecodesign Directive 2009/125/EC

Exhaust Duct: 6” OD port can be hard-ducted, thimble connected, exhausted back into the room, or exhausted out of a mobile laboratory.

Energy and Sound Blower current 0.53 amps. <55 dBA @ 80 FPM

Airflow Target face velocity: 80 FPM. Non-turbulent, gentle airflow sweeps particulates into the rear baffle.


Air Flow Alarm Features:

  • Adds additional security needed for your laboratory researchers.
  • Continuous tracking of air velocities within the balance enclosure.
  • Includes next generation airflow alarm technology.
  • Audible and visual alarm functions.
  • Includes 110 volt adapter
Airflow velocity range: 40 - 2,000 fpm
Response time: < 1 second
Alarm indicators: LED light & audible Piezo
Turbulence warning: Flashing yellow LED rest switch
System failure: Red flasing LED
System healthy: Green solid LED




Air Flow Alarm system 

Most Popular Accessories


Bag-In / Bag-Out Port

800-BIBO/PORT, Bag-In / Bag-Out port includes a long ArmorFlex TM polypropylene bag (48” long) for safe removal of trash and unwanted debris.

Unwanted debris and trash are always contained and are never exposed outside of the containment isolator. Bag port is 6” OD clear acrylic with two machined grooves for bag placement.

Bag Port Crimper Tool

The 800-BIBO/CRIMPER allows you to safely and securely remove, and seal, used HEPA filters. HEPA filters are removed from the inside of the glove box, through the transfer chamber, and into the Bag-In / Bag-Out port. The used HEPA filters are never exposed to the laboratory atmosphere or the researcher.



Adjustable Lift Tables

Adjustable Height Lift Tables with locking casters.

Height range: 25” to 45” (635mm x 1143mm)

Maximum Weight: 330 lbs. (149 kilos)

Cart Options:
Adjustable lift table for 900-VBE/24
Adjustable lift table for 900-VBE/36
Adjustable lift table for 900-VBE/48
Adjustable lift table for 900-VBE/60

900-LVFH/36 with 900-CARTLIFT/36

Extraction Units

900-EXTRACT, Extraction Unit is a variable speed suction housing that includes your choice of filters such as HEPA or Impregnated Carbon. Suction speeds can be adjusted from “0” up to 250 CFM face velocity.


Filter Options

900-LVFH/HEPA, HEPA Filter  

900-LVFH/CARBN(A), Alkaline type fumes.

900-LVFH/Carbon, Impregnated carbon filter.


900-LVFH/CARBN(B), Ammonia or amines.

900-LVFH/HEPA/CARB, Combination. HEPA / Non-Impregnated Carbon Filter.


900-LVFH/CARBN(C) Aromatic hydrocarbons,organic vapors, keytones, alcohols, organicacids, and odors.


Low Velocity, non-HEPA filtered Fume Hoods

This Low Velocity Fume Hood system has been developed in response to customer requests and suggestions for improvements to the original product currently offered in the market place.

These units can be used with your in-house exhaust system or our accessory #900-EXTRACT, Fume Extraction Unit. All units are ANSI/ASHRAE 110:2016 Certified. You can select either HEPA or Activated Carbon filters (or a combination of both) for the Extraction Unit. Three (3) styles of Carbon are available.




All Low Velocity Fume Hoods include:

  • Standard 24 month warranty (Not consumables; i.e. filters).
  • Units are fabricated out of .375” (9.5 mm) thick optically clear acrylic plastic.
  • Hinged (two [2] position) front sash with draft deflector.
  • Formed horizontal lower front airfoil.
  • Two (2) formed vertical air foils with draft deflectors.
  • Bright white acrylic bottom work surface.
  • Two (2) side wall cable ports at 1.5”Ø (38 mm). 
  • Six (6”) inch Ø (about 152 mm) exhaust hook up.
  • The exhaust hose is smooth bore inside and is six (6”) inch (152mm) Ø x eight (8’) feet (2,440 mm) long.

Our hoods are unique in that they include both horizontal and vertical “air foils” taking advantage of a“venturi” effect. They also feature rounded rear corners to guide and facilitate inner atmosphere exhaust efficiency.

The exhaust hose has a “smooth bore” interior, which minimizes air flow exhaust restrictions, is chemically resistant, FDA approved, and is included with the main work housing. It may be attached directly to your house exhaust system.

Low Velocity, non-HEPA filtered, Fume Hood options

Work Surface:  23.25" x 19" deep
Outside dimensions:  24" wide x 27" deep x 28" high

Work Surface:  35.25" x 19" deep
Outside dimensions:  36" wide x 27" deep x 28" high

Work Surface:  47.25" x 19" deep
Outside dimensions:  48" wide x 27" deep x 28" high

900-LVFH/36 shown with optional 900-EXTRACT Extraction Unit and optional support cart.

Custom Capabilities


Plas-Labs is committed to providing high quality research equipment at a fair price. We realize that unique research protocols may require individualized equipment. We offer the following special services:
  •  Design Engineering.
  •  Custom Service/Maintenance Schedules.
  •  CAD Drawings.
  •  New Product Development.
  •  Customized Operator Manuals.
  •  F.A.T. Documentation.
  •  I.Q. & O.Q. Documentation.
  •  Third Party Certification.
  •  On Site Training.
  •  Various Materials of Construction, Eg., Light Sensitive Protection, Stainless Steel, Static-Dissipative Acrylic, Clear PVC, and PETG.
For more information on our custom capabilies, please contact us.