natural fluoride level

natural fluoride level

The concentration of fluoride in mg/L present in the water from natural fluoride sources.
References in periodicals archive ?
4 ppm, which was indicative of a high level of natural fluoride level in the water samples obtained.
The area with the highest natural fluoride level, Hartlepool, had only a third of the decay of three other areas and there was no noticeable harm to the children.
Centers for Disease Control and Prevention, Metropolitan will adjust the natural fluoride level in its imported supplies--ranging from 0.