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What property should pigment of high grade edible have?
From;    Author:Stand originally

High grade pigment has following property:

  

Colour and lustre is sterling, bright beautiful;
  

Purity tall, tinting strength is strong;
  

Dissolvability is good
  

Water-insoluble matter content little, solution is clear and bright;
  

Matter content is little, be able to bear or endure the stability such as smooth, heat is strong;
  

Batch with it is good to approve consistency