Assertion: phosphate | /r/CapableOf | provide controlled ph range
Facets:
value: in the boiler water
type: LOCATION
value: to provide a buffering counteraction
type: PURPOSE
Source sentences:
text: A pH/phosphate program differs from a standard or residual phosphate program in that the phosphate is primarily added to provide a controlled pH range in the boiler water to provide a buffering counteraction against acid and caustic attack of the internal metallic surfaces, which is described in more detail below.