In addition to the well-known ceramic and polymer-based membranes for microfiltration, metallic membranes are also available. These are a metallic sinter which is pressed into a membrane under defined conditions. These membranes are used where, due to the prevailing application conditions, the medium is very abrasive and the previously mentioned membranes no longer offer sufficient service life. These membranes are also successfully used at high temperatures. Various exclusion limits are available.