DOP Sparge Pipes

Improves the testing of clean air hoods, Microbiological Safety Cabinets, isolators, and any installed HEPA filter where the mixing distance permitted is short, resulting in a poorly mixed aerosol challenge.  The DOP Filter Test requires that the challenge aerosol is fully mixed in the system air stream by the time the challenge reaches the HEPA […]

ATI 6D Laskin-Nozzle Aerosol Generator

The 6D is a small, light, and rugged portable, self-contained Laskin-Nozzle aerosol generator. It is ideal for testing a wide variety of filter systems with airflows up to 2,000 CFM by generating a poly-dispersed, sub-micron aerosol. Applications include workstations, negative- pressure filtration units, biological safety cabinets, ceiling modules and more. It can also be used […]

ATM 226 Aerosol Generator

The atomizer aerosol generator ATM 226 is built for mobile use and has a very compact and rugged design. The generator is especially suited for testing of HEPA and ULPA filter media, acceptance measurements of clean rooms and safety cabinets and generation of tracer particles at low flow rates. The ATM 226 is the right […]


The Positive Injection Pump (PIP) provides the user with a safe system for the direction of aerosol from a Thermal Generator or Laskin Nozzle Generator to the point of use.  Aerosol is drawn into the PIP at its suction point and ejected under pressure through a large bore flexible pipe.   The tubing supplied can […]

ATI TDA-4B Laskin-Nozzle Aerosol Generator

The 4 series family of Laskin-Nozzle aerosol generators are durable, portable, and reliable. Designed for testing filter systems ranging from small glove boxes to large cleanroom plenums, ATI Laskin Nozzle generators provide the ideal solution for creating a poly-dispersed, sub-micron aerosol to certify and qualify in-situ filter systems. End users include independent filter certifiers, government, […]

5D Thermal Aerosol Generator

5D Thermal Generator

The 5D Thermal Aerosol Generator is designed for operators who require a wide range of aerosol output concentrations to perform leak tests on smaller clean air cabinets through cleanroom air handling systems. It is the high capacity solution used in demanding industries. Cost-Effective Save time and money in the most demanding multi-filter cleanroom installations. In […]

ATI 2i Photometer

The ATI 2i is portable, yet rugged, and the ideal instrument for in-situ filtration system integrity testing. Utilizing the iProbe provides full functionality away from the base unit, minimizing downtime and maximizing efforts in the field. The 2i is also available with a sealed sample train for use in nuclear and other hazardous environments. The […]

Filtertest Equipment

Specialist in HEPA/ULPA filtertest equipment Lighthouse has a complete program with solutions for testing and classifying HEPA/ULPA filters. Lighthouse is gold supplier of DOP and ATI filtertest equipment. In addition to delivery, full service, maintenance, and calibration can also be performed on these products (and other brands). For filtertests based on the particle counter principle, […]