Value of free residual chlorine in Drinking water should be:
It's should be minimum 0.5 mg/l (ppm) in drink water >= 1.0 mg /l swimming pool >=2.0 mg/l kill cyclops Measured by chloroscope
0.2 mg/L
0.3 mg/L
0.4 mg/L
0.5 mg/L
FMGE 2018