## SweetWARETM |
Computer Software for Restaurants, Bakeries and Food Manufacturers |

ppm means "parts per million". Here is what you need to do the conversions. - There are 1000 mg (milligrams) per g (gram) ("milli" means thousandth).
- There are 1000 µg (micrograms or mcg) per mg (milligram).
- Because of 1 and 2, there are 1 million (1,000,000) µg (micrograms or mcg) per g (gram) ("micro" means millionth).
- 1 part per million (ppm) for a 1g sample is 1 µg or .001 mg.
(Because there are 1 million micrograms per gram.) - 1 part per million (ppm) for a 100g sample is 100 µg or .1 mg.
- 604 parts per million (ppm) for a 100g sample is 60,400 µg or 60.4 mg.
So, If the sample size is 100g: To convert parts per million (ppm) per 100g sample to mg (milligrams), divide by 10. If the sample size is other than 100g: To convert parts per million (ppm) per X g sample to mg (milligrams), multiply by X and divide by 1000. For example, if your sample size is 28g, then 5 ppm is 140 µg (micrograms) = 5 x 28 |