This part of ISO13779 specifies requirements for ceramic hydroxyapatite intended for use as surgical implants.
This part of ISO13779 applies to hydroxyapatite blocks.
It does not apply to hydroxyapatite coatings, hydroxyapatite powder or nanoparticle-type and calcium phosphate ceramics which are not mainly composed of crystalline hydroxyapatite.
This part of ISO13779 does not apply to nanoparticle-type materials.