Our all-rounder for demanding applications
Our permeation measuring cell was specially developed for the precise measurement of flat samples and is suitable for analyzing plates and films. The optimized design of the cell enables cross-method use: measurements using the pressure rise method or carrier gas method as well as the volumetric method can be carried out without any problems. This enables permeation characterization over many orders of magnitude.
Thanks to a specially selected steel alloy, measurements are also possible with corrosive media. Our standard test cell allows measurements at pressures of up to 100 bar. The modular design also enables coupling with sensitive analysis devices so that polymeric high-barrier materials can also be characterized.
100bar permeation measuring cell from Mecadi – precision, flexibility and reliability
The first prototype was developed over 20 years ago. Since then, the test cell concept has been continuously developed and optimized, particularly with regard to dead volume, response behaviour, detection limit, extension of the pressure and temperature usage window.
The test cell is versatile and can be used to reliably measure a wide variety of materials under realistic test conditions. These include soft elastomers, mechanically demanding films with and without coatings as well as solid polymer sheets with and without mineral fillers such as glass fibers, carbon fibers and other fillers. In addition, the cell conforms to a large number of common standards in the field of permeation measurement.
The standard version of the test cell covers a wide temperature range from -50 °C to +150 °C. This range can be extended both upwards and downwards by making appropriate adjustments.
Advantages of our 100 bar permeation measuring cell
- Representative test conditions: The test conditions can either be taken from relevant test standards or specially adapted to the individual application conditions of your material.
- State-of-the-art technology: Our measurement setup ensures that all permeation measurements are performed with the highest possible degree of accuracy and under exact specified conditions.
- Flexibility in test conditions: We offer a high degree of customization to meet your specific requirements (including variable pressure and temperature profiles and different gas mixtures). Our standard cuff cell can be used for the manometric method, the carrier gas method as well as the volumetric method. Speed and efficiency: By using advanced technology, we can provide you with fast results that are crucial for product development and approval.
- Individual advice: Our team is on hand to advise you on the best test methods for your specific materials and requirements.
Detection limits and recommendations
The detection limits for permeation measurements in the Mecadi measuring cell are specified in the relevant standards and depend on the test method, test medium and test material. Please contact us to discuss your specific application.
Requirements for your samples
- For a precise measurement, we need your samples in a format that meets the standard requirements (circular cut-outs with a diameter of at least 100 mm, or DIN A4 sheets). For standard measurement, we require samples with a diameter / edge length of at least 90 mm.
- It is important that the sample is representative of the material and has no faults or defects.
- Thickness variation < 5%, roughness r(a) < 20 μm.
- We are happy to determine the thickness of the sample for you in accordance with ISO 4593.
- We realize sample cuts from larger containers by cutting, punching, laser cutting, water jet cutting (external).
- For tissue-containing samples, we offer additional cut-edge masking to prevent false-to-low false results.
- We recommend sending at least three independent samples per test. We usually measure samples with a thickness of 20 µm to 3 mm. Other thicknesses are also possible on request.
Test media
We offer a wide range of different test gases and liquids in order to be able to react flexibly to your request. These include, for example
Standard: hydrogen, nitrogen, oxygen, helium, argon, krypton, etc.
Specialties: NH3, H2S, Cl2, HCl, SF6, NO, NO2, short-chain alkanes, etc.
Test conditions
The Mecadi high-pressure measuring cell is specially designed for use with hydrogen under extreme conditions. Alternative test media can also be realized. We will be happy to advise you on specific requirements or mixing ratios.
For material use in a specific application, the permeation data should be selected as close as possible to the operating point of the application (pressure, temperature).
Our laboratory enables us to carry out permeation tests at temperatures ranging from -50 °C to +150 °C.
Get in touch with us
Would you like to find out more about our high-pressure measuring cell or do you need a customized offer? Our team of experts is available to answer all your questions. Contact us via our online form or directly by email or phone. We will be happy to advise you on your requirements and find the solution for your material tests.
