Units of Measure

What is the abbreviation for micro units per mL?


Wiki User

1 ml of water weighs 1 gram, so if you are meaning microgram quantities, you would have parts per million. For example if you had 100 micrograms per ml, this would be the same as saying 100 grams per 1000 liters, which is the same ratio as 100 grams per million grams. Parts per million is expressed as ppm.