M2045 Particle generator, ULPA filter, HEPA filter, clean room, filter test

Applied Physics, Inc.


Applied Physics, Inc.

Call Us: 1-720-635-3931

Wafer Size Standards

Clean Room Foggers

Ultrapure Foggers

PSL Spheres, Silica Particles

Aerosol Product Information

Particle Generator Using Polystyrene Latex spheres

M2045, High Output, Particle Generator

M2045, Particle GeneratorThe Model 2045 Particle Generator is used to provide a particle challenge to ULPA filters and HEPA filters. Polystyrene Latex spheres are used as the upstream particle challenge to measure filter efficiency of ULPA and HEPA filters and search for pin hole leaks across the filter surface. HEPA filters provide 4/9 and 5/9 filter efficiency, while ULPA filters offer 6/9 and 7/9 filter efficiency. The Model 2045 Particle Generator easily meets the upstream particle challenge, producing 7.2x10 E10 at 0.10μm particles per minute. Polystyrene Latex spheres at 0.3μm are used to challenge HEPA filters and detect pin hole leaks, while Polystyrene Latex spheres at 0.15μm or 0.12μm are used to challenge ULPA filters and detect pin hole leaks.

The upstream particle count of the filter challenge is extremely important, since a 6/9 ULPA filter has the capability to trap 99.9999% of all particles flowing through the filter, which is 1 particle out of 1 million particles trapped by the 6/9 ULPA filter. Thus a very high, upstream particle count of 7.2x10 E10 at 0.10μm particles per minute is needed to sustain the upstream particle challenge of a HEPA filter. The Model 2045 is the only Particle Generator to provide this high particle count challenge. The Polystyrene Latex spheres are mixed with the appropriate air flow volume, such as 700 CFM, 1000 CFM or 2000 CFM, which provides a uniform airflow to the upstream filter, while evaporating the DI water surrounding each Polystyrene Latex sphere prior to the upstream filter contact.

Particle Generator: Features

  • High Aerosol Particle Generation of 7.2x10 E10 per minute at 0.100μm Polystyrene Latex particle size
  • 1x10 E8 Polystyrene Latex particles per cubic foot of airflow volume are provided at 0.1um particle diameter, using 720 cfm of airflow on a 24 inch by 48 inch filter at 90 feet per minute airflow velocity
  • Polystyrene Latex peak size distribution is provided with very few doublet or triplet agglomerates
  • Minimal double and triple charged particles with an electrical ionizer
  • High efficiency particle atomizer ensures a small sized DI Water droplet to carry the PSL Spheres
  • Instant On and Off Power Control ensures little Polystyrene Latex particle loss to minimize operational costs
  • Remote power on / off
  • Constant particle count over long periods of operation
  • Stainless Steel enclosure, superb controls to automate the Particle Generator

Particle Generator: Specifications

Features and Specifications subject to change without notice.

Polystyrene Latex Particle size range

0.100 μm to 0.500 μm

Polystyrene Latex Particle Output

7.2 x 10 E10 per min @ 0.100 μm

Output air flow rate

8 scfm Dry Nitrogen or Compressed Dry air

Compressed Dry air or Dry Nitrogen

8 scfm @ 80 - 100 psig

Remote Control Switch

115 VAC, 60 Hz, 2 Amps

Dimensions (L x W x H)

18 inches x 12 inches x 20 inches