Wet Processing
Dye is dosed on fabric weight; auxiliaries are dosed on bath volume. Keep the two bases straight.
— kg
Adjusted for commercial strength
Commercial dyes are sold at varying strengths against a standard. A 200% brand needs half the weight, so always confirm the strength before scaling a lab dip.
Dyeing Recipe & Bulk Dosing Calculator — free, with the formula and a worked example, at Textile School.