Assertion: phosphoric acid's amount | /r/MadeOf | 15 to 45%
Facets:
value: by weight p
type: OTHER
Source sentences:
text: The amount of addition of the fluoride is preferably less than about 10 gr. per liter of wet process phosphoric acid containing 15 to 45% by weight P 0 and 1 to 5% by weight hydrofluosilicic acid.