PPM + Typhoid killing

Alot of people believe it is better to have a smaller PPM size of around 5-20ppm than larger amounts. This is due to particle size which can be bigger with higher PPM. I think it happens because of clumping together of the silver particles. Stick to the 20ppm etc! I did hear that 500ppm of C.S can kill TYPHOID disease in 15 mins where as 20ppm took 2 hours. Tweet