ATI manufactures portable Laskin spray nozzle aerosol generators that can produce sub-micron oil mist aerosols of various diameters, with concentrations ranging from 10 to 100 micrograms per liter, at flow rates between 50 and 8,100 cubic feet per minute (at 20 psi).

Suspended particle generators and photometers are used in high-efficiency air filtration systems for integrity testing or leak source testing.

Filter manufacturers use this device to scan ULPA and HEPA (ultra-high efficiency, high efficiency) filters to verify their products. Filter certifiers use this device to confirm that the filter has not been damaged in shipping and is completely and correctly installed without any leaks. With the appropriate combination of aerosol generator and photometer, filter deficiencies such as pinholes, thin spots, gasket leaks, structural leaks or sealing problems can be quickly and quantitatively detected and corrected to protect products and personnel.

The TDA-4B and TDA-4B Lite feature improvements in several areas, such as rugged stainless steel construction, large fill port, independent nozzle control and 3-inch standard sanitary fitting output. An optional hose adapter, part number 9300100, is provided for introducing the aerosol into a positive pressure system. The TDA-4B is ATI's latest design of durable, lightweight, small, compact aerosol generator. All that is required is a supply of clean compressed air to produce a variety of sub-micron aerosols. The TDA-4B has 6 nozzles that dilute into 810 cubic feet of air per minute at 20 PSI, with gas concentrations around 100 micrograms per liter. Three valves allow the instrument to be operated between 1-6 nozzles, providing a wide range of airborne particle concentrations. The TDA-4B is recommended for testing systems with flow rates of 8,100 cfm and below. It is ideal for testing leaks in workstations, negative pressure filtration systems, biosafety cabinets, ceiling modules, small clean rooms, or HEPA filter units.

Features and advantages

TDA-4B Aerosol Generator

TDA-4B air suspended particle generator

1.1 Laskin Nozzle dust generation method 
1.2 Manually adjustable 
1.3 Large-capacity loading dust generation 

Technical Parameters

Application scope

2.1 Clean room   
2.2 HVAC system  
2.4ULPA filter   
2.5 Operating room  
2.6 Nuclear filtration system   
2.7 Technology Research and Development