Standard test dust
DMT Pural NF
 
  
  
 General description
 DMT Pural NF is used to characterize the filtration behavior of cleanable filter media. Chapter 3.3 specifies the test dust with a particle size distribution < 20 µm. 
 Note: Pural NF is the trade name of a Sasol product. This information is only intended to inform users of the International Standard.
 
Composition
The specified particle size distribution is shown in the following table:
| x (µm) | Q3(x) (%) | 
| 1.20 | 10.0 | 
| 4.5 | 50.0 | 
| 15.0 - 20.0 | 90.0 | 
Transport and Storage
Partial segregation may occur during transport and storage. It is therefore recommended to homogenize the DMT Pural NF before use, which can be achieved by mixing with a laboratory tumbler mixer. Please store in a dry and airtight original container.
Quality ensurance
 In order to achieve reproducible quality, the raw materials and production are strictly controlled. The following quality controls are carried out:
 
 Monitoring the particle size distribution of raw materials
 Monitoring the particle size distribution of the end product 
Specification
| Name : | DMT Pural NF | 
| Standard: | ISO 11057 / VDI 3926-1 / ASTM D6830 | 
| Title of Standard: | Air quality -- Test method for filtration characterization of cleanable filter media | 
| Composition : | Aluminium-Oxid-Hydroxid | 
| Material: | Aluminium-Oxid-Hydroxid | 
| largest particle size (µm) : | 50 | 
| Substance density (g/cm³) : | 3,95 | 
| Apperance : | solid | 
| Hardness (Mohs): | 9,0 | 
| Colour : | white | 
