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Classical Polyorifice Cascade Impactors |
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 Eight Stage Non Viable Impactor
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IntroductionTwo 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. 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. References
Eight Stage Non Viable ImpactorApplications
Features
Specifications-Cut Points for the 8 Stage Non Viable Impactor
These cut points are incorporated into the BGI Spread sheet which permits direct analysis of 8 Stage Non Viable Impactor Data In addition to the impactor proper, the standard kit includes:
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| Height | 8.25 in. (20.96 cm) |
| Diameter | 3.81 in. (9.78 cm.) |
| Weight | 3.6 lb. (1.634 Kg.) |
Ordering Information |
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| BGI20800 | 8 Stage non viable impactor without preseperator |
| BGI20801 | 8 Stage non viable impactor with preseperator |
| BGI20702A | Set of 8 replacement SS impaction plates |
| BGI20301 | 81mm Glass Fiber Substrate Discs (100 per box) |
| BGI20301QZ | 81mm Quartz Fiber Substrate Discs (50 per box) |
| BGI20304 | 81mm Aluminum Foil Substrate Discs (100 per box) |
| BGI20305 | 81mm Glass Fiber Substrate Disc w/ Open Centers, for Stages “0” and “1” (100 per box) |
| BGI20305QZ | 81mm Quartz Fiber Substrate Disc w/ Open Centers, for Stages “0” and “1” (50 per box) |
This is the Tisch rendition of the most highly regarded biological Cascade Impactor of all time. A detailed instruction manual is provided.
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:
| Height | 7.69 in. (19.53 cm) |
| Diameter | 4.18 in. (10.62 cm.) |
| Weight | 2.7 lb. (1.232 Kg.) |
Ordering Information |
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| BGI10800 | Six Stage Ambient Viable Sampler System |
| BGI10704 | Petri Dishes with aluminum covers (12 per set) |
Single Stage Impactor |
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Stage |
D50 |
1 (6) |
0.70 |
Two Stage Cascade Impactor |
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Stage |
D50 |
1 (1) |
5.8 |
1 (6) |
0.70 |
In addition to the impactor proper, the standard kit includes:
| Height | 2.82 in. (7.16 cm) |
| Diameter | 4.18 in. (10.62 cm.) |
| Weight | 1.38 lb. (0.626 Kg.) |
Ordering Information |
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| BGI10890 | Single Stage Ambient Viable Sampler System |
| BGI10860 | Two Stage Ambient Viable Sampler System |
| BGI10704 | Petri Dishes with aluminum covers (12 per set) |
The Tisch Personal Cascade Impactor is patterned after the Marple unit. It has a flow rate of 2 lpm and is intended to be utilized with a user supplied personal sampling pump (AFC123).
Stage Number |
Cut Diameter (µm) |
1 |
21.30 |
2 |
14.80 |
3 |
9.80 |
4 |
6.00 |
5 |
3.50 |
6 |
1.55 |
7 |
0.93 |
8 |
0.52 |
These cut points are incorporated into the BGI Spread sheet which permits direct analysis of 8 Stage Personal Impactor Data (an additional spreadsheet is provided for bimodal distributions)
The directions given on the spread sheet supersede the Instruction manual (8P)
| Height | 3.5 in. (8.89 cm) |
| Width | 2.35 in. (5.97 cm.) |
| Weight | 0.52 lb. (0.236 Kg.) |
Ordering Information |
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| BGI298 | 8 Stage Personal Cascade Impactor |
| BGIC290MY | Collection Substrates 34 mm dia. Mylar (100 per box) |
| BGIC290GF | Collection Substrates 34 mm dia. Fiberglass (100 per box) |
| BGIIGT | Impaction Greasing Template |
| AFC123 | AFC123 Personal Sampling Pump |
