CFR - Code of Federal Regulations Title 21
The information on this page is current as of April 1 2020. For the most up-to-date version of CFR Title 21, go to the Electronic Code of Federal Regulations (eCFR). Sec. 137.105 Flour. (a) Flour, white flour, wheat flour, plain flour, is the food prepared by grinding and bolting cleaned wheat, other than durum wheat and red durum wheat.