I finally found the reference I knew I saw about the IP protein being of a certain purer quality. I hope this does not start a whole new controversy and commotion. I get no financial or other benefit (other than losing weight like crazy and loving this diet) from IP. I Just wanted to follow up on the original post I got creamed for. True or not, I don't know, but here it is and it sounds convincing to me:
"37. What is the Whey Protein source? Is it from cows, which are not given Bovine Growth Hormones (BGH) and are the cows grass fed/organic?
The milk used in processing our whey isolates comes from cows raised on small European farms, grass fed and with no hormones. We cannot claim “organic” as the process of extracting the isolates precludes this nomenclature. That being said, the person must understand that an “isolate” is just the pure protein fractions of the total whey, these are issued with a “Certificate of Analysis” showing any traces of heavy metals, hormones, pesticides or any other chemical. The lot is
PLACED IN QUARANTINE (i.e. Not even brought into the lab) until we do our own mass spec assay of the product. If our on analysis does not “jive” with the “Certificate of Analysis” from the European company the product is rejected and returned.
http://www.benchmarkmedicalgroup.com...ht-loss-faq#24