ULTRAFILTRATION NextUltra®

Ultrafiltration is similar to nanofiltration and osmosis, but is defined as a cross-flow filtration process that separates ions. NextUltra® ultrafiltration separates solutes above 1,000 daltons, molecular weight. Due to the larger pore size of the membrane, ultrafiltration requires a much lower operating pressure differential: from 0.7 to 6.9 bar.

Ultrafiltration removes larger organic compounds, colloids, bacteria and pyrogens, while allowing most ions and small organic substances, such as sucrose, to permeate through the porous structure.

Ultrafiltration technology is used to physically separate, from an aqueous solution, even extremely small soluble substances, such as ions and molecules, whose size can be measured in nanometres.

Ultrafiltration membranes are true porous membranes, capable of retaining medium-molecular-weight organic substances, in the range of 1,000–500,000 Da, from tight ultrafiltration up to the threshold of microfiltration.

Standard models can be equipped with a variable number of modules, depending on the flow rate of purified product extracted, from 200 to 4,000 L/h.