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Designed to Protect Workers and Surrounding Environment!

Negative Pressure Containment Units


Flexible-Film (Softwall) Containment Units

For the Containment of Highly Pathogenic Organisms or Potent Compounds.

Containment Units Are Designed to Protect Workers and Surrounding Environment!

NOTE: This is NOT a laminar airflow design. The chamber is completely enclosed.


Containment Units

• Negative Pressure

• Not a laminar airflow design

CBC's Flexible Film (Softwall) Containment Units are both Durable and Economical.



You Should Consider the Cost Saving Advantages of Flexible Film (Softwall) Containment Units for the Containment of Highly Pathogenic Organisms or Potent Compounds


CBC will design a flexible film (softwall) containment unit or bio-isolator system that will meet your requirements.

Our softwall, restricted access barrier containment units are designed to protect workers and prevent the release of highly pathogenic organisms or highly potent compounds into the surrounding environment.

For researchers, CBC has manufactured flexible film containment units for containment of pathogens such as the H5N1 (the avian influenza), H1N1 (the swine influenza) and Bacillus anthracis (anthrax); and for necropsy tables to prevent the potential spread of organisms during a necropsy.

For the pharmaceutical industries, CBC has designed units for potent compound storage, weighing, milling and exhaust collection.


CBC can design a flexible film unit to fit inside your current BSL 3 lab or around an existing piece of equipment.

Some of the features of the CBC softwall (flexible film) containment units include:

  • System is run under negative pressure.
  • A totally contained chamber, the system does not use the laminar airflow design (the chamber is completely enclosed).
  • HEPA inlet and outlet filtration system.
  • Large removable doors for moving caging or supplies in and out of the unit.
  • Portable.
  • Air handing system will automatically turn off the inlet supply when the door is opened or the pressure increases to almost the ambient room pressure, thus maintaining the negative or inward airflow.
  • Durable 20 mil. polyurethane for sidewalls and ceiling.
  • Strong 30 mil. polyurethane flooring (can stand up to heavy caging systems).
  • Lap Seam construction.
  • Resealable snap loops for easy assembly and disassembly.
  • 1 1/2" annodized aluminum tubing used for frame.
  • Provides a restricted access barrier.

Optional equipment:

  • Water and electrical supply lines.
  • Environmental monitoring, 24/7 monitoring of items like air pressure, airflow, temperature, and humidity.
  • LED read outs.
  • Wheels for mobility.
  • Air handing system that will automatically turn off the inlet supply when the door is opened or the pressure increases to almost the ambient room pressure; thus, maintaining the negative or inward airflow.
  • Airtight divider panels.
  • Shower-in and/or Shower-out antechambers.

Filter and Transfer Port Options:

Each flexible, barrier isolator system comes with a HEPA filter on the inlet and exhaust. An attachment can be added to the exhaust filter housing to allow for exhausting into the building's exhaust system. Alternatively, a second HEPA filter can be added to the exhaust system to allow venting back into the room. ULPA filters are also available.

The transfer port systems come in stainless steel, acrylic, or polypropylene. The design can be the conventional system with two (2) removable vinyl caps or a rapid transfer port system.


Flexible film containment units can be radiated if required!

NOTE: Our flexible film containment units can be radiated if required!

The CBC Difference

The CBC difference includes our original lap-seam sealing process and the use of 20 mil. polyurethane material that is almost indestructible and helps ensure against contamination due to accidental puncture or tear.

CBC uses a highly durable "lap seam" seal for the majority of our seams, and an even superior "cut/weld/strip seam" seal for high risk areas. Because your reputation, research or production should not risk being compromised!    (See, "Pull Test" and "Puncture Demonstration" videos below.)

The CBC Lap-Seal Seam "Pull" Test

Single Seam Seal vs. CBC Lap Seal Seam  Read more

Because your reputation, research or production should not risk being compromised!
20 mil. Polyurethane Puncture Demonstration

CBC's 20 mil. polyurethane material is almost indestructible and helps ensure against contamination due to accidental puncture or tear.  Read more

Because your reputation, research or production should not risk being compromised!
Decontamination Chambers for small items such as scales and microscopes.
Decontamination Chambers

Decontaminate equipment used in research and production.  Read more

For small items such as scales and microscopes.
Positive pressure, flexible film cleanrooms with chambers that are completely enclosed for Bio/Pharmaceutical production.
Positive Pressure, Flexible-Film (Softwall), Cleanrooms

The flexible film (softwall) chambers are completely enclosed. (This is not a laminar airflow design.). CBC softwall clean rooms are available in 4 standard sizes and are relatively inexpensive when compared to other systems.  Read more

For Bio/Pharmaceutical Production.

Accessories and Components:

Stainless steel, acrylic polypropolene transfer ports.
Transfer Ports

Standard sizes are 12", 18" and 24" diameters.  Read more

Acrylic, Polypropylene or Stainless Steel.
Round and square HEPA filters for gnotobiotic isolators, cleanrooms and containment units.
HEPA Filters

For gnotobiotic isolators, cleanrooms and containment units.  Read more

5" (diameter) x 5" (length), 5" (diameter) x 8" (length) round sizes. Custom square sizes.
Original lap-seam seal flexible film, germfree isolator.
Manufacturing high quality, flexible film isolators for universities, researchers and germ-free animal producers since 1978.
Containment unit with an airtight removable wall to convert a single chamber into tow separate chambers.

Pictured above is a containment unit with an airtight removable wall.

Converts a single chamber into two separate chambers.

Durable and economical - for containing highly pathogenic organisms or potent compounds. Lap seam seal construction.

Send Us a Message


608.273.9661
810 Stewart Street, Madison, Wisconsin 53713
info@cbclean.com

Email CBC.
© 2011-2022 Class Biologically Clean, Ltd. - Madison, Wisconsin - All rights reserved

® CBC is a Registered Trademark of Class Biologically Clean, Ltd.


Flexible Film Isolators, Softwall Cleanrooms, Containment Units and Accessories for Controlled Research Environments.