The CH Technologies Modular BCU Exposure Chamber is ideal for small-scale whole-body exposure studies. Each individual cage is composed of polysulfone to ensure the maximum resistance to chemicals and heat – this means that these chambers can withstand extreme cleaning cycles over their lifetime.

The cages accommodate up to 10 mice or 5 rats each. The cage design allows for optimal continual mixing of fresh test atmosphere. This minimizes the variation of exposure to each individual animal and leads to results that are more precise. The cages receive test atmosphere from appropriately designed 4, 6, or 9-port manifolds equipped with both a small mixing chamber and an attachment for any CH aerosol generator.

Our inhalation systems allow direct, nose only exposure of a test aerosol to a number of animals simultaneously. Through the patented aerosol delivery system, a homogenous distribution of the aerosol is achieved. These systems have a modular design, which mean the only limiting factor to the size of tests is the space available to test in.


The NOIES family of devices includes exposure systems for single animal, two to five animal exposure, and tiered modular systems (stackable) for 12, 16 and 18 test subjects per tier. While rats and mice are most often the subjects of Oro-Nasal Aerosol Respiratory Exposure Systems (ONARES) applications, the ONARES technologies for restraint and compound delivery as a size selected aerosol, a gas or a dust/powder can be applied to ferrets, rabbits as well as primates.

Sampling can be done on a per cage basis or over the entire system allowing researchers full access to the test atmosphere. Quick disconnect fittings allow for easy connection while providing extra security measures by way of their design. Negative pressure systems are also available allowing an additional level of safety if necessary.

The systems utilize custom-built mounting racks that hold up to nine BCU exposure cages. The flexibility this system provides allows for a wide range of test applications.

The NOIES has delivered consistent and validated results over a wide range of aerosols in all facets of research. Aerosol is generated at the bottom of the tower and directed straight to the nose of the animal. After the aerosol is delivered, exhaust air is immediately vented through the outer plenum and top of the tower minimizing any rebreathing by the animal. Easy maintenance, dependable results, and industry tested design are just a few reasons  exposure systems are found throughout some of the most prestigious research facilities worldwide.

Whole Body Modular Inhalation System

Nose-Only Inhalation Exposure System