Marple - Miller Impactor Overview These cascade impactors are used for testing aerosol drug delivery devices such as the metered dose inhaler (MDI) and the dry power inhaler (DPI) to determine the aerosol size distribution. They have sharp cut-point characteristics, low internal particle holdup, and are easy to operate. The impactor D50 diameters are 10, 5.0, 2.5, 1.25, and 0.625 µm at the standard flow rate of 30 L/min for the Model 150 and 60 L/min for the Model 160. Each model can also be operated over a range of flows: 30 - 60 L/min for the Model 150 and 60 - 90 L/min for the Model 160. A pediatric version, Model 150R, operating from 4.9 L/min to 12.5 L/min, is also availableMarple - Miller Impactor Specifications
| D50 Diameter, µm, at standard flow rate) |
10, 5.0, 2.5, 1.25, and 0.625 |
| Filter diameter, mm |
37 |
| Pressure Drop, mm H2O |
150 |
| Standard flow rate, L/min |
Model 150: 30
Model 150R: 12.5
Model 160: 60 |
| Operable flow rate, L/min |
Model 150: 30-60
Model 150R: 4.9-12.5
Model 160: 60-90 |
| Base (L x W x H), mm |
Model 150: 305x216x10
Model 150R: 305x216x10
Model 160: 430x346x10 |
| Impactor only (L x W x H), mm |
Model 150: 165x64x422
Model 150R: 165x64x422
Model 160: 232x90x595 |
| Weight |
Model 150: 5.85 kg
Model 150R: 5.85 kg
Model 160: 16.4 kg |
Marple - Miller Impactor Design Marple - Miller Impactor Features
- High performance precision cascade impactors
- For testing MDIs and DPIs
- Low internal particle holdup
- Sharp cut-point characteristics
- 30 and 60-L/min standard flow rates
- 90-L/min maximum flow
- Pediatric version at 12.5 and 4.9 L/min available
- Artificial throat available
- Easy sample recovery
- Reduce test cycle time
- Easy to setup and use
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