considering that glucorell uses the ONLY viable testing method, other than labiochems which is not as accurate (though its quite good, certainly suitable)... you and pretty much everyone else, including those selling r-ala, have no idea. This is not meant to be harsh, though that was your intention, it is just the truth.
as a note, very few manufacturers and resellers have 99% material, from experience less than 1 in 5 lots of raw material tested met standards.
for this reason every batch of material is tested even from a reliable manufacturer.
you should be very cautious in making claims about a topic on the basis incorrect and inadequate information.
as a note- the hplc method used by asta medica was innaccurate by their own admission as well as by the critique of the journal in which it was published. and they used a custom column which as you might guess is not being used by those that would purport to test using that method (innaccurate as it is).