Here's a pH test-- all olive oils are graded in accordance with the degree of this they contain (lower is better)
... 76 percent of samples bought at groceries had all the pollen removed, .... 
We want people to know who to contact if they have questions.. [DOC] [TLE] Glycerine: an overview - Science [PAR] The origin, chemical structure, and utility of glycerine have been known for ... W. 
Scheele, the Swedish chemist, while he was heating a mixture of olive oil and ... 
principal constituents of almost all vegetable and animal fats and oils.