This disclosure concerns a method of fabricating an inorganic membrane, comprising coalescing inorganic particles at an air-liquid interface of a vessel in order to form the inorganic membrane, wherein inner walls of the vessel is configured to repel the inorganic nanoparticles.

The present disclosure relates to a cartridge for a plurality of dry hollow fiber membranes having a large inner diameter. The cartridge fastens the capillaries in their position and protects them from damage. The present disclosure also relates to an apparatus and a process for cutting a plurality of dry hollow fiber membranes having a large inner diameter.

The present disclosure relates to a process for manufacturing a sterilizing filter comprising a plurality of hollow fiber membranes having a large inner diameter.