Assertion: phosphoric acid's amount | /r/HasProperty | supplied to the digestion
Facets:
Source sentences:
text: In practice, it has been found that optimum results are obtained when the amount of phosphoric acid supplied to the digestion, at about 30% P 0 concentration, is such as to provide between about 1.9 and about 2.6 pounds of P 0 per pound of P 0 in the phosphate rock.