DOP dispersion manifold system of .5" diameter 304 stainless steel tubing is mounted at least 8" above the HEPA/ULPA filters and can be provided in each CLEANPAK plenum module. The manifold ports provide injection of challenge aerosol upstream of the filter.

The ports are sufficiently located to ensure good mixing i.e. homogeneous distribution of the aerosol across the whole filter face and are fabricated with sufficient size to enable the entrace of the required challenge aerosol to achieve required upstream concentration.

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