Polyurethane material, is used in a place, and the existing instruction preferably as microorganism indicates pH, is included therein the polyurethane network for keeping one or more hydrophilic copolymers motionless, including the or each copolymer: hydrophilic monomer It indicates monomer, provides instruction in response to the one of the hydrophilic monomer and/or copolymer in hydrophilic state It is characterized in that, the or each copolymer further includes one or more ionogens or part or depends on ionization of the ionogen, part or monomer in response to pH and in that hydrophilic state of hydrophile copolymers in the place of range pH 5 to pH 10 with it with the polymerisable monomer in the distinctive pKa value of one or more of range 5 to 10 External member and equipment including material and its process for preparation It is used in terms of detection or sensing microorganisms or pH.
