How to calculate the dose of sodium hypochlorite to be added to 4 lakhs liter of water at 0.5ppm and 1ppm? So that, at the end user should get 0.2 free residual chlorine, any formula in this regard?
What is the cost of Horrock's apparatus?
How to calculate the dose of sodium hypochlorite to be added to 4 lakhs liter of water at 0.5ppm and 1ppm? So that, at the end user should get 0.2 free residual chlorine, any formula in this regard?
What is the cost of Horrock's apparatus?