Assertion: hypophosphorous acid's concentration | /r/HasProperty | to 90%
Facets:
Source sentences:
text: It can be seen that, the conversion rate was above 80% in both cases where pre-concentration was to 90%; and, where concentrated to less than 75%, yields 15 were even lower (71.6 vs. 82 or 83 of Examples 1 and 2).