Wheat Flour Extra Class: Humidity - 14% - 14.5% Ash content - 0.54% Whiteness - 58% Gluten - 25% IDK - 65 - 80 conv. Units Wheat flour of the first grade with improved quality indicators: Humidity - 14% - 14.5% Ash content is 0.67% Whiteness - 52% Gluten - 26% IDK - 65 - 90 conv. Units Wheat Flour 1 Class: Humidity - 14% - 14.5% Ash content is 0.74% Whiteness - 48% Gluten - 26% IDK - 70 - 85 conv. Units