How do you calculate the fertilizer requirement from percentage to ppm and ppm to percentage?
There is a factor of 10,000 between ppm and percentage: ppm
stands for parts per million, whereas percent means per hundred,
and there is a factor of 10,000 between one hundred and one
million. To go from ppm to percentage, divide my 10,000 and from
percentage to ppm multiply by 10,000. Hope this helps.