I Went to my local health food shop (not a chain) for the pysillium husks. They were in a big tub and you measured out the quantity you wanted.
I asked if they had nothing added to them and the staff looked at me as if I'd asked the most stupid question ever, anyway - no they replied with a look of disbelief.
The porridge is good but later that week my kettostix showed that I was in trace (pink colour) all previous tests showed dark purple.
Obviously the pysillium i bought was not pure, just be carefull when buying pyillium you have to use the pure stuff with nowt added.