Wheat flour 1st grade Quality: Moisture max 14 Wet Gluten min 23 Index Gluten 65-80 Falling number 330-350 Ash max 65 Whiteness min 50 All-purpose Quality: Moisture max 14 Wet Gluten min 26 Index Gluten 65-80 Falling number 330-350 Ash max 65 Whiteness min 50 Top Grade Quality: Moisture max 14 Wet Gluten min 26 Index Gluten 65-80 Falling number 330-350 Ash max 55 Whiteness min 55 Extra grade Quality: Moisture max 14 Wet Gluten min 29 Index Gluten 65-80 Falling number 330-350 Ash max 53 Whiteness min 58