Wet Processing
On a continuous range the pump must track the line. A fixed dose plus a speed change is a shade change.
— L/h
Volume the padder removes from the trough
Trough volume should be as small as the machine allows. A large trough means the first metres after a stop carry a different concentration than the rest.
Continuous Dyeing Range Dosing Pump Rate Calculator — free, with the formula and a worked example, at Textile School.