Assertion: calcium ion's number | /r/CapableOf | use certain level of salt
Facets:
value: as a regenerant
type: MANNER
Source sentences:
text: In the case of a softener for the removal of hardness, we define capacity as the number of ppm or equivalents of hardness a given quantity of resin can remove from a given feed stream at a given flowrate and temperature to a given breakpoint, using a certain level of salt as a regenerant.