THE CALIBRATION OF A MODIFIED ANDERSEN BACTERIAL AEROSOL SAMPLER

Abstract

A study of the flow regime in the commercial Andersen Sampler revealed defects in the sampling of the larger air-borne particles. Satisfactory sampling was obtained by redesigning the hole pattern of the top stages and adding one more stage to extend the range of the instrument. A new, rational, hole pattern is suggested for the lower stages. With both patterns a special colony-counting mask can be used to facilitate the assay. A calibration of the modified system is presented that enables particle size distribution curves to be drawn from the colony counts.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1963
Accession Number
AD0425221

Entities

People

  • Kenneth R. May

Organizations

  • United States Army Biological Warfare Laboratories

Tags

DTIC Thesaurus Topics

  • Aerosols
  • Bacterial Aerosols
  • Biological Laboratories
  • Calibration
  • Clearances
  • Diameters
  • Distribution Curves
  • Efficiency
  • Geometry
  • Literature
  • Measurement
  • Numbers
  • Particle Size
  • Particles
  • Standards
  • Static Pressure
  • United States

Fields of Study

  • Environmental science

Readers

  • Aerosol Science/Aerosol Physics
  • Systems Analysis and Design