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Premix Plant Practice: Uniformity and Stability Control
Quality control routines for feed mills and premix plants using vitamin raw materials.
Background
Uniform distribution of micro-ingredients is the foundation of premix quality. Particle size, bulk density and electrostatic behaviour of the raw material all influence the final coefficient of variation.
Practical Recommendation
- Match carrier particle size to the micro-ingredient particle size where possible.
- Validate mixer performance with a marker-based uniformity test at defined intervals.
- Follow a documented sequence: carrier first, then micro-ingredients, then macro components.
- Keep warehouse temperature and humidity within the range stated in the technical data sheet.
Observed Benefits
- Coefficient of variation maintained within the target range
- Reduced segregation during transport and handling
- More consistent finished feed analysis results
Uniformity targets should be defined in your own quality manual and verified by routine testing.
