Assertion: antacid's acid | /r/CapableOf | prepare the magnesium salt
Facets:
value: about 0.4:1
type: OTHER
value: to about 1:1
type: OTHER
Source sentences:
text: The preferred alginic acid used to prepare the magnesium salt comprises a polymer chain of mannuronic acid and guluronic acid segments in a ratio of mannuronic to guluronic acid of about 0.4:1 to about 2:1, and most preferably about 0.4:1 to about 1:1.