We routinely employ the following analysis methods to classify paper kaolins: 

- Chemical analysis                         DIN 51001
- Mineralogical analysis                   X-ray diffraction
- Particle size distribution                ZC method V/27.3/90
- Residue from wet sieving              ZC method V/27.6/90
- pH value                                       ISO 787/9
- Brookfield viscosity                       DIN 53019
- Haake viscosity                             DIN 53019
- Determination of  Aspect Ratio     Least Bounding method
- Abrasion AT 1000                         ZC method V/27.7/90
- Moisture                                        ISO 787/2
- Specific surface                            DIN ISO 9277