In-Tox Products, LLC products

Many test articles are solubilized or suspended in an aqueous vehicle for aerosolization with nebulizers and other atomizing devices. This may produce larger than desired particle size distributions and increase the relative humidity in the inhalation exposure chamber or aerosol sampling system. To mitigate these phenomena, In-Tox Products developed the Quad Track Diffusion Dryer.

The In-Line Mixer is an aerosol conditioning device that introduces clean, compressed air into the aerosol stream in a laminar manner. As air is added, it dilutes and gently mixes the aerosol. The aqueous fraction of the test article is driven into the vapor phase resulting in a dryer, more stable aerosol. The In-Line Mixer is an excellent choice to use in conjunction with the Quad Track Diffusion Dryer to remove the vaporized aqueous fraction and reduce the relative humidity in the system.

The Radial Mixer is an aerosol conditioning device that introduces clean, compressed air into the aerosol stream in a rotating manner. The Radial Mixer provides more mixing action than the In-Line Mixer and it also produces a dry, stable aerosol by driving the aqueous fraction of the test article into the vapor phase. To avoid turbulent flow, the Radial Mixer should not be operated at a volumetric flow rare greater than approximately 10 L/min.

The Fluidized Bed Aerosol Generator (FBAG) has been a useful method of generating aerosols from powders or dusts. Observations of particle deposition patterns in inhalation exposure systems with and without a Kr aerosol discharge device suggested that the aerosolized particles may carry a large number of electrostatic charges. Measurements of average charge carried by aerosols generated from an FBAG were performed for a variety of aerosolized materials. It was found that average charge per particle was higher for insulators than for metals and increased with increasing fluidization airflow for most materials. Also, the charge level was found to be changed with the length of operating time.

The Venturi style dry-powder generator has air entering into one end of the venturi.  The powder is fed into the narrowed throat of the venturi by the pressure differential.  A funnel that is attached to the body of the venturi holds the powder supply.  Then, shear flow disperses the powder into an aerosol in the expansion section.  The total flow and the feed flow are functions of the compressed air pressure.  The flow rate downstream of the Venturi  tube is measured using a dry test meter.

The Reciprocating Dry Powder Aerosol Generation System uses a pneumatic driven device that can be operated in continuous or single puff configurations. A slide bar is actuated into fill, load, and dispersion positions. The actuation rate, volumetric airflows and pressures are set and monitored using a differential pressure orifice meter and a LabVIEW-based Control Platform.

The In-Tox Products Cyclone Train is used to determine the particle-size distribution in process streams and to bypass the limitation of Impactors. Cyclone Samplers are advantageous for collecting large samples and in sampling aerosols of high particulate concentration. Cyclones are available in Brass or Stainless Steel and available with a Regular or Elongated Cup. The Cyclones may be purchase individually. A single Cyclone can be used as a pre-cut for a Cascade Impactor.

The Combination E.S.P. has two collection grids and uses an electrode like the Point-to-Plane model. It uses the same standard transmission electron microscope grid as one collection surface and a 3/8” carbon planchet as the second collection surface for scanning electron microscopy. By symmetrically placing the electrode and collection surfaces, the single needle electrode charges particles to both collection surfaces. The recommended current charge and flow rate is the same, 3 microamperes and 100cc/min., as with the Point-to-Plane.