Ac. Max. 1°
 

I purchased a bottle of oil, on which I found there exists a phrase 'AC. MAX. 1°'. After googling I then learned that AC. MAX. means Acidez Máxima. But I can't find the meaning and pronunciation of the symbol - '°'. So my questions:

- What does that mean and its pronunciation? From the resource found online e.g. http://lasahita.com/es/acidez-del-aceite-de-oliva/ It looks not percentage '%'.

- If the value with ° higher would be better or worse?

Thanks

The '1°' referenced in the article you linked to is written 'un grado' in Spanish. Here the symbol means 'grade' (instead of 'degree', which is also another word for the same symbol). (The same symbol is used to represent the ordinal numbers used with masculine gender, e.g., 'first' = primero = 1°.)

The grade mentioned in the article is equivalent to the percentage of acidity. So, instead of the '°' symbol, it could have also been written as '1%'. Later on in the article, you'll see such a reference (where it says that an acidity of more than 2% isn't fit for human consumption).
In Spanish, '1%' is written out as 'un porcentaje'.

Is there any articles that explains such classification for oil? I notice that oil seems to be labeled with different grade; for instance AC. MAX. 1° or AC. MAX. 0.4°, and so on. It's interesting to learn it as I didn't know that there exists such classification.

Thanks again for the explanation, it's helpful!