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|1. (WO2018146310) A METHOD FOR PRODUCING ULTRAPURE WATER|
|Applicants:||MERCK PATENT GMBH
|Title:||A METHOD FOR PRODUCING ULTRAPURE WATER|
The present invention relates to a method for producing purified water comprising a step (a) of passing water through a mixed bed ion exchanger comprising beads having a diameter between 0.2 and 0.7 mm and a step (b) of passing water through a fibrous ion-exchange material. The invention further relates to a module comprising the mixed bed ion exchange resin and the fibrous material and to a water treatment system for producing ultrapure water comprising the mixed bed ion exchange resin and the fibrous material.