To calculate the time if the current and required ppm are known (the normal case).
The formula is: Time (mins) = Volume DW (Ltrs) x ppm Ag x 15 / mA on CC meter |
volume (ltrs) x ppm x 15
time = ———————————–
mA
OR
To calculate the ppm if the time and current are known:
The formula is: ppm Ag = Time (mins) x mA on CC meter / Volume DW (Ltrs) x 15 |
time (mins) x mA
ppm Ag = —————————–
volume DW (Ltrs) x 15