Polydisperse Generators

Polydisperse generators create aerosols that span a wide range of particle sizes, providing a practical challenge for filtration, sampling, and instrument response studies. These generators are a mainstay in R&D labs that need representative particle populations for screening, method development, and rapid iteration.

Applications:

• Filter media and respirator studies using multi-size distributions
• Optical instrument development that requires broad response characterization
• Upstream feeds to DMAs and impactors for subsequent size-segregation
• Environmental chamber seeding and background conditioning
• Robust baseline generation for QA/QC and pilot testing

Technical Benefits:

• Stable, Repeatable Output: Achieve consistent concentration over extended periods for improved statistics.
• Broad Material Compatibility: Generate aerosols from salts, oils, and surfactant-containing solutions to match your test protocol.
• System Flexibility: Pair with neutralizers to help reach charge equilibrium and with DMAs/impactors for downstream separation.
• Efficient Workflows: Rapid setup supports screening campaigns and early-stage research needs.

Best Practices:

• Use a neutralizer to support charge equilibrium before optical or mobility-based measurements.
• Control solution concentration and atomization pressure to tune output.
• Validate the distribution with an SMPS or OPC to document your challenge aerosol.
• Standardize operating procedures across teams and facilities to accelerate comparisons.

Selection Considerations:

• Desired particle size range and modal structure
• Target concentration and run duration
• Test material and compatibility
• Instrumentation pairings and data outputs

Outcome:
Polydisperse generators help teams evaluate designs and materials at speed, building evidence that feeds into later-stage, size-classified testing. Connect with TSI to align generator performance with your filter testing, instrument development, or environmental conditioning goals.