Factors considered for selecting a carrier



        i.            High carrier efficiency
      ii.            Availablility at low cost
    iii.            Little or no effect on light fastness of final dyeing
    iv.            Absence of unpleasant odour
      v.            Non-toxicity
    vi.            No degration or discolouration of the fibre
  vii.            Ease of removal after dyeing
viii.            High stability under dyeing condition
    ix.            Compatibility with the dyestuffs
      x.            Easw of dispersion in the dyebath
    xi.            Low volatility of the carrier including low volatility in the steam