Why Apatite II?

• Most apatites are ineffective

  • recrystallized - less reactive
  • fully fluorinated - less reactive
  • little microporosity - less reactive
  • no carbonate - less reactive
  • high existing metal content

• Apatite II is the best

  • fully carbonated - most reactive
  • no fluorine or trace metal content
  • microporous - most reactive
  • amorphous with random nanocrystals
  • inexpensive and abundant

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