Equipment includes polyurethane material, it is used in a place, existing instruction preferably as microorganism indicates pH, including with 5 immobilised polyurethane networks in wherein one or more hydrophilic copolymers, including the or each copolymer: hydrophilic monomer Indicator monomer provides instruction in response to the one of the hydrophilic monomer and/or copolymer in hydrophilic state 10 are characterized in that, the or each copolymer further includes one or more ionogens or part or depends on ionization of 15 ionogens, 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.
