Assertion: pyrophosphoric acid's effect | /r/HasProperty | revealed by the 28-48 mesh sample
Facets:
Source sentences:
text: The results of these samples allow one to see that the full effect of the treatment is revealed by the 28-48 mesh sample and that there is no practical problem with such a particle size, while treatment is required in the case of a particle size of less than 20 mesh (about 0.8 mm).