Question: how to convert mg/l to lbs/day?
Answer: Lbs/day = MGD x (ppm or mg/L) x 8.34 lbs/gal. % purity.
GPD = MGD x (ppm or mg/L) x 8.34 lbs/gal. (% purity) x lbs/gal.
GPD = MGD x (ppm or mg/L) x 8.34 lbs/gal.
ppm or mg/l = lbs/day. or.