learning about acidosis

I recently started learning about acidosis as a potential cause/exacerbant of eczema.  There are several versions of a list of Acid / Alkaline Forming Foods ( this link goes to http://www.rense.com/1.mpicons/acidalka.htm ) and some of my favorite foods appear different places.  For instance lentils and quinoa.  There was another page I can't find at the moment which ranked each food on a 1-4 scale...