0.3 Micron Filter

A 0.3 micron particle filter can now be ordered separately. The filters easily connect between the mouthpiece assembly and the RTube while offering an extra level of sample protection. Individual laboratories should determine if the use of a filter is appropriate for their particular area of interest before starting a study.

Below we provide an illustrated list of the most common uses and configurations for the filter:

		Configuration A This configuration can be used by laboratories studying inorganic solutes. Large exhaled particles are trapped by the filter while allowing vapors to pass through. The filter's effect on larger molecules such as proteins and cytokines has not been determined.
		Configuration B (Filter on Top) The filter works to protect the researcher while collecting condensate from patients with transmittable diseases. Ideal for studies of subjects with tuberculosis.
		Configuration C (Filter on Inlet Valve) The filter stops unwanted substances from entering the respiratory tract from the air. May be useful for occupational exposure studies.