M MemGas™ The MemGas™ membrane technology is a proven state-of-the-art technology for biomethane production. It is based on the permeability and selectivity of the membrane in respect to different gases. Biogas and Odour Treatment U UFLEX™ The new UFLEX™ ultrafiltration systems are skid-mounted, reliable and compact solutions for removing suspended solids, most bacteria and log4 viruses. Membrane Filtration (MF/UF/NF)