Flour, the highest grade (whites) is the whitest flour class and highest quality. It contains mostly endosperm, where most protein is located, allowing for good gluten development. Whites flour made from soft wheat and used for cake flour contains 40-60% straight flour and has the highest quality, with whiteness of 57-58 ref. units, 27-28% wet gluten content, 75 gluten deformation units, and 270 second falling number. It has 14.4% moisture and is packaged in 1kg, 2kg, 3kg and 50kg bags. Quality indicators include parameters like 13% maximum moisture, 0.11% maximum ash, 0.040% insoluble ash, 0.40%