11 Filter membranes, namely, liquid filters, water filters, air filters, gas filters for chromatography purposes; liquid filtering membranes for industrial use, namely, liquid filters, water filters for chromatography purposes; filters and filtering membranes, namely, liquid filters, air filters for chromatography purposes; polymer membrane units being chemical filters and polymer permeation membrane units being chemical filters, namely, recuperators for chemical processing in the field of chromatography; membranous filtering units for pharmaceuticals, beverage, food, and biopharmaceutical products, namely, liquid filters, gas filters, and filters for clarification, filters for particles for industrial installations; filters and pre filters in the form of sheets, membranes and fabrics; polymeric and metallic membranes and cartridges for filtering and purifying gases, namely, gas filters for industrial installations; polymeric and metallic membranes and cartridges for filtering and purifying liquids, namely, liquid filters; ion exchange membranes and material as parts of filters or as part of membrane absorbers, especially membrane filters, namely, gas filters for chromatography process purposes; filters and membrane absorbers for filtering solutions used in clinics, namely, air filters, liquid filters for chromatography process purposes; filtering apparatus incorporating compound filter membranes for industrial, biotechnological, pharmaceutical production and scientific purpose, namely, air filters, liquid filters in the field of chromatography; ion exchange apparatus and instruments for purification, namely, liquid, solid particles and gas filters for chromatography process purposes; membrane filters made from porous sheet material and free of particles for purifying process liquids for industrial use, namely, liquid, solid particles and gas filters; fluid purification, separation and concentration units utilizing evaporation, distillation and membrane processes, namely, liquid, solid particles and gas filters; porous and semi- porous diaphragms for apparatus and equipment used for treatment of waters and aqueous solutions, namely liquid, solid particles and gas filters; apparatus and accessories with permeable and semi-permeable membranes for the purification and treatment of water and aqueous solutions, namely, liquid, solid particles and gas filters in the field of chromatography; membrane processing equipment by ultrafiltration, liquid filtration nanofiltration, and hyperfiltration, namely, liquid, solid particles and gas filters, air filters in the field of chromatography; filter modules, membranes, membrane filters, membrane absorbers, absorbers and filter matting for use in technology, medicine, biology, the food and drinks industry, the luxury food industry, biotechnology, the pharmaceutical industry, the cosmetics industry, the chemical industry, in genetic engineering, in laboratories, in environmental engineering, and for treating and analysing water and waste water, all the aforesaid goods being parts of liquid treatment filter systems or being stand-alone filters for liquid filtration, namely, liquid, solid particles and gas filters, air filters for chromatography process purposes