Test centre
From laboratory test to process guarantee
The success of an industrial plant begins with reliable data. In our test centre, we validate your separation processes under actual conditions and with your original products. This allows us to provide you not just measured results, but a robust and impartial foundation for your scale-up decisions.

A transparent and collaborative process
We understand that time and budget are critical. That is way our testing process is designed to provide clear, reliable results quickly and cost-efficiently.
The typical approach:
- Enquiry and analysis: You contact us explaining your separation challenge. We carry out an initial theoretical assessment and discuss the results with you.
- Proposal: You receive a clear proposal outlining a detailed test programme and all associated cost.
- Execution: You send us your product or solvent mixture and we carry out the agreed tests – you are welcome to attend the testing if desired. We keep you informed of progress through regular updates.
- Report and samples: You receive a comprehensive final report reviewed by our process engineers. On request, we can also return the purified product samples for your own analysis.
The world's largest laboratory for pervaporation tests
Our core competence lies in pervaporation. We operate the world’s largest pervaporation laboratory and offer unique expertise, including the handling of ceramic membranes. Our tests provide critical data for a successful scale-up.
Purpose: Confirmation of membrane compatibility with your solvent, measurement of performance (permeate flux, selectivity), and validation of long-term stability. This applies to standard solvent dehydration as well as demanding applications such as flavour recovery.
Equipment: Our facilities include multiple bench-scale units for feasibility studies, two dedicated test rigs for long-term stability tests, one unit for acid dehydration, and two test rigs for ceramic membranes.

Distillation and evaporation tests
For many separation tasks, thermal processes remain the most suitable solution. Our laboratory tests for distillation and evaporation are designed to provide reliable data for your plant design quickly and cost-effectively. We use the results to validate process simulations (ChemCAD) and confirm the number of theoretical stages – a crucial basis for the design of your industrial plant.
Cross-flow pilot tests
For applications such as the clarification of fermentation broths, wine, or fruit juices clarification, or the concentration of proteins, we offer cross-flow tests at pilot scale. Using our pilot plants, we identify the most suitable membrane type, assess product quality, and measure the permeate flux. Since the scale-up factor for these processes is typically linear, these tests provide a highly accurate and reliable basis for the design of the industrial plant.
Our test packages: Clear, transparent, and predictable
We believe in transparent, collaborative partnership. That is way our prices are clearly defined and include all services, from preparation and execution to analytics, the final report, and material disposal.
- Feasibility study: Ideal for the initial, rapid validation of your separation task.
- Stability test: critical test for validating long-term performance for scale-up.
- Full programme: comprehensive analysis including evaporation, distillation, and pervaporation.
As unique as your process
Frequently asked questions
How long does a test programme at DeltaMem take?
That depends on the complexity. An initial feasibility study usually takes one week. More extensive programmes, such as on long-term stability, may take four weeks. A full programme including evaporation, distillation, and pervaporation can take up to six weeks.
What does a test at DeltaMem cost?
We offer highly competitive prices. A one-week feasibility study costs 6,500 CHF. These prices include preparation, execution, analytics, the final report, and the proper disposal of test material.
What does DeltaMem provide at the end of the testing process?
You receive a detailed technical final report containing all measurement data, results, and interpretations. This report is always reviewed by a process or sales engineers who is also involved in the subsequent industrial scale-up, ensuring the direct applicability of the results.
