Which visible changes mean an ampoule of the Aguettant Ltd noradrenaline 1 mg/ml concentrate for solution for infusion product must not be administered?

An ampoule of the Aguettant Ltd noradrenaline 1 mg/ml concentrate for solution for infusion product must not be administered if pink, darker than pale yellow, cloudy, or containing particles or precipitate; only clear, colourless or slightly yellowish solution free of particles or precipitates should be used.