We want to attenuate the portions of such impurities to lower chances of corrosion.For finding the ppm values we need a special calculator just like the components per million calculator. PPT means “pieces for every trillion” and it is used to measure concentrations that tend to be lesser than PPB https://andylmkfb.vidublog.com/35656981/ppm-calculator-things-to-know-before-you-buy