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Classical Polyorifice Cascade Impactors

   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Eight Stage Non Viable Impactor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Six Stage Viable Impactor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


Single Stage Viable Impactor

 

 

 

 

 

 

 

 

 

 

 


Downloads

Download the latest version of the 6 stage & single stage viable instruction manual.
Click here and then click on manual # 40.
Download the latest version of the 8 stage non-viable instruction manual.
Click here and then click on manual # 41.
Download a BGI Spread sheet which permits direct analysis of
8 Stage Non Viable Impactor Data

 

Introduction

Two pioneering names in the theory and development of Cascade Impaction are K.R. May1 and A.A. Andersen2. BGI staff were associated with both founders, Gussman having written the last Casella Impactor Manual with K.R. May and Merrifield having prepared the Andersen Cascade Impactor manuals with A.A. Andersen. BGI went on to develop the 4 Stage High-Volume Cascade Impactor3 which was a successful Environmental size fractionator of the 1970’s.
Given BGI's considerable experience with the production, and application of Cascade Impactors, BGI has decided to sell, service, support and expand the historical Andersen style Cascade Impactors. The rendering of the genius of A.A. Andersen is very superior. With the expiration of the original patents, several firms have attempted to produce these instruments only to discover that multi-hole impactors represent a quality inspection challenge of unprecedented difficulty. Every Impactor is furnished with an inspection report on the dimensions of every hole on each plate; some plates having 400 holes. In addition, with consolidation and buy-outs of historical instrumentation companies and their loss of history and theory, BGI remains the one commercial company with aerosol expertise, who can help the user with applications and scientific experiments.
The first BGI enhancement is a series of spreadsheets which simplify the analysis of the test results to a few keystrokes.

Because of the explosive growth of Environmental and Aerosol Science as well as Industrial Hygiene and Indoor Air Quality (IAQ), many persons do not know what a Cascade Impactor is and are afraid to ask.
Nature and use of a Cascade impactor.

References

  1. K.R. May, “The Cascade Impactor: An Instrument for Sampling Coarse Aerosols”, J. Scientific Instruments, 22:187-197, 1945
  2. A.A. Andersen, “A New Sampler for the Collection Sizing and Enumeration of Viable Airborne Particles”, J. Bacteriology, 76:471:484.1958
  3. R.A. Gussman, A.M. Sacco and N.M. McMahon, Design and Calibration of a High Volume Cascade Impactor, APCA Journal, 23 No. 9, (Sept. 1973).

 

Eight Stage Non Viable Impactor

Applications

  • Basic Aerosol Studies
  • Special Area Monitoring
  • Pharmaceutical Studies
  • Inhalation Research
  • Evaluation of Metered Dose Inhaler products

Features

  • Established and proven design
  • Proven calibration
  • 100% Orifice Inspection
  • Economical pricing
  • Includes spreadsheet software

Specifications-Cut Points for the 8 Stage Non Viable Impactor

Stage Number
Cut Dia. (µm)
Pre-seperator
10
0
9
1
5.8
2
4.7
3
3.3
4
2.1
5
1.1
6
0.7
7
0.4

 

In addition to the impactor proper, the standard kit includes:

  • 8 Stainless steel collection plates.
  • Back up 81 mm filter holder.
  • Vacuum pump assembly.
  • Carrying case.
  • Tubing


Dimensions and Weight

Height 8.25 in. (20.96 cm)
Diameter 3.81 in. (9.78 cm.)
Weight 3.6 lb. (1.634 Kg.)

 

Ordering Information
Click on a part number to add that item to your Price Quote List

BGI20800 Eight Stage Ambient (Non-Viable) Impactor System. Includes 8 aluminum orifice stages, 8 stainless steel collection plates, final 81mm backup filter, 11 silicone o-ring gaskets, 120 volt vacuum pump assembly and carrying case. Complete system
BGI20801 Same as BGI20800, includes High Capacity Pre-Seperator
BGI20830 Eight Stage Ambient (Non-Viable) Impactor Only with carrying case.
BGI20702A Replacement set of 8 stainless steel collection plates
BGI20301 Box of 100 Glass Fiber Substrates, Stage 2 to 8
BGI20305 Box of 100 Glass Fiber Substrates, Stage 0 and 1
BGI20704 Replacement set of 11 O-Rings

 

Six Stage Viable (Microbiological) Impactor

Applications

  • Aerobiology Studies
  • Special Area Monitoring
  • Infectious Studies
  • Exposure Research.

Features

  • Established and proven design
  • Proven calibration
  • 100% Orifice Inspection
  • Economical pricing
  • Permits separation into size groups

Specifications-Cut Points for the 6 Stage Viable Impactor

Stage Number
Cut Diameter (µm)
0
9
1
5.8
2
4.7
3
3.3
4
2.1
5
1.1
6
0.7

In addition to the impactor proper, the standard kit includes:

  • Vacuum pump assembly.
  • Carrying case.
  • Tubing

Dimensions and Weight

Height 7.69 in. (19.53 cm)
Diameter 4.18 in. (10.62 cm.)
Weight 2.7 lb. (1.232 Kg.)

 

Ordering Information
Click on a part number to add that item to your Price Quote List

BGI10800 Six Stage Biological (Viable) Impactor System.
Includes 6 aluminum orifice stages, 6 glass petri dishes with covers, silicone o-ring gaskets, 120 volt vacuum pump assembly and carrying case. Complete System.
BGI10830 Six Stage Biological (Viable) Impactor Only with carrying case.
BGI10704 Replacement set of 12 glass perti dishes with covers
BGI10706 Replacement set of 7 O-Rings

 

Single Stage Viable (Microbiological) Impactor (NIOSH6 or N6)

Single Stage Impactor

Stage
D50
1 (6)
0.70

Two Stage Cascade Impactor

Stage
D50
1 (1)
5.8
1 (6)
0.70

 

 

 

 

 

Applications

  • Aerobiology Studies
  • Special Area Monitoring
  • Infectious Studies
  • Exposure Research.

Features

  • Established and proven design
  • Proven calibration
  • 100% Orifice Inspection
  • Economical pricing

Dimensions and Weight

Height 2.82 in. (7.16 cm)
Diameter 4.18 in. (10.62 cm.)
Weight 1.38 lb. (0.626 Kg.)

 

Ordering Information
Click on a part number to add that item to your Price Quote List

BGI10890 Single Stage Biological N6 Viable) Impactor System.
Includes 1 aluminum orifice stage, 1 glass petri dish with cover, silicone o-ring gasket, 120 volt vacuum pump assembly and carrying case. Complete System.
BGI10880 Single Stage Biological (N6 Viable) Impactor Only with carrying case.
BGI10704 Replacement set of 12 glass perti dishes with covers


Copyright © 2006 by BGI / Modified: Tuesday, November 17, 2009

   

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