I would follow one of the ...

Published May 26, 2017 15:22 by David Cifuentes, Edible Fats and Oils, Industry Manager at Flottweg Separation Technoloy

I would follow one of the methods attached below. In short, you're not really calculating a dosage so much as maintaining a residual. You will want a chlorine residual in at all times in the farthest point of the header, under all circumstances.