Machines and Colloid Mills for Herbicide Production

Proven technology for state-of-the-art herbicide formulations

Whatever type of herbicide you produce, the manufacturing process presents a host of demanding requirements: lipophilic and hydrophilic actives, emulsions and suspensions, hybrid systems such as suspo-emulsions, and other combination formulations. However complex the task, our innovative, high-performance colloid mills deliver: maximum dispersion efficiency, tight particle-size control, outstanding phase stability, and precise rheology management.

Thanks to the performance-optimised modular design, PUC colloid mills provide first-class results from laboratory trials through to full-scale production—even when working with highly viscous concentrates that demand extremely fine distribution.

Flexibility for complex formulations

Many commercial herbicides combine oily, aqueous and solid components. Uniform distribution of these actives is critical to product quality.
Our colloid mills offer the ideal balance of shear intensity and throughput to process even the most intricate specifications. The precision rotor–stator system, with a continuously adjustable gap, guarantees stable, homogeneous results in every batch.

Viscosity control and phase stability

Modern herbicides are often sold as high-viscosity concentrates that conventional mixers struggle to homogenise. PUC colloid mills handle such thick, solids-rich ingredients with ease, avoiding blockages and dead zones. Acting simultaneously as dispersing unit and pump, the mill draws each formulation evenly through the shear gap for intensive mixing. The outcome: concentrates that remain stable across wide temperature swings and extended storage periods.

Clean, safe operation

Absolute cleanliness and batch integrity are essential in herbicide production—even trace residues from a previous batch can harm sensitive crops. PUC colloid mills drain virtually residue-free and are exceptionally easy to clean, greatly simplifying contamination control measures.

Flexible integration and long-term parts support

PUC colloid mills are available for both batch and inline operations and integrate readily into standard processing lines. ATEX-certified versions can be supplied for formulations having explosion hazards. We also guarantee long-term spare parts availability, ensuring sustainable operation and safeguarding your investment.

Whether you manufacture an emulsifiable or suspension concentrate, PUC colloid mills enable you to produce herbicides that are stable, high quality and cost-effective.

Probst & Class as a Supplier to the Chemical Industry

Probst & Class mills are "state-of-the-art" machines that have been used in the chemical industry for 80 years. Using a PUC, both small outfits and large industrial companies produce herbicides of consistently highest quality.

The high manufacturing quality of PUC machines typically ensures a service life of several decades. The supply of replacement and spare parts, even for very early models, guarantees a secure investment and low total cost of ownership over the entire life cycle of the machines.