ConAgra flours are consistant and dependable, and they have a full line of
flours available for professional bakers: unbleached, unbleached/organic,
pastry flour, high gluten, bread, all purpose, etc. etc.
If you contact your customer service agents for your distributors they
should be able to give you detailed information packates from ConAgra wich
will give info on protein levels, ash content, etc.
Also, I believe Sysco is a distributor for King Arthur's professional line.
I'd inquire about that as well.
Roxanne