Assertion: phosphoric acid's concentration | /r/CapableOf | phosphate as apatite
Facets:
value: possibly
type: DEGREE
Source sentences:
text: One of the preferred solutions is to use a phosphoric acid advantageously of the same concentration as that which it is desired to purify and to dissolve in the latter raw materials containing calcium and possibly phosphate such as for example phosphate ores such as apatite.