Natural extracts

Naturally fresh and clean

Efficient extraction of natural substances

Separation solutions from BHS-Sonthofen have a proven track record across the globe when it comes to the extraction of valuable substances from plant-based raw materials. The high-performance filter systems deliver efficient processes and ensure natural purity and consistent quality of the end product. Our machines are successfully used both in continuous production and batch operation.

Other typical applications include biomass, lupines, algae, maize silage, elephant grass, St. John’s wort as well as willow and birch bark.

Benefits at a glance:

  • High performance and consistently high quality
  • Continuous or batch production
  • Optimum filtration processes
  • Efficient utilization of consumables

The various cake treatment stages

Indexing belt filter of type BF 100-050 in pharmaceutical design. The pharmaceutical version is certified according to EN ISO 22716 and has ground and polished surfaces

The various cake treatment stages

In natural substance extraction applications, plant residues are first suspended in water or solvents and filtered subsequently. Our indexing belt filters (type BF) and rotary pressure filters (RPF) are perfectly suited for solid-liquid separation. Both systems are closed units that allow several stages of filter cake treatment to be performed. The valuable resources are dissolved from the liquid in a way that is gentle on the product. They can then be further processed in many ways that serve the needs of the pharmaceutical or food industry. The systems deliver high yields despite very low consumable requirements.

Our machines in use

Rotary pressure filter (RPF)

A single rotation of the drum entails a number of different process steps, demonstrating the many facets of filtration.

Indexing belt filter (BF)

This type of vacuum filter is particularly gentle on sediments.

Tests give certainty

Which technology is the right one for your process? Don’t leave anything to chance. In our test center and filtration laboratory, we test according to your specifications and identify the optimal solution for you.

Success stories

Indexing Belt Filter (BF) Used for Herbal Extract Production in Switzerland

October 2019
A Swiss pharmaceutical company has successfully deployed an indexing belt filter (BF) to produce an herbal extract using an extraction and filtration process.


Gulfood Manufacturing 2023

11-7-2023 - 11-9-2023


5-15-2024 - 5-16-2024


11-12-2024 - 11-14-2024

Satisfied customers worldwide


Find a sales representative

Find your personal contact person on site. We are there for you worldwide.

Find a sales representative

Find your personal contact person on site. We are there for you worldwide.