How to measure?

Let's say i have an 8 ounce bottle of a solution and I need 2% active ingredient. How many MG or MCG would that be?

thanks

I think you're going to need to be a lot more specific on this one to get any help bro. I'm not great with conversions but I think you need more information in order for someone to be able to help you with this formula

Impossible to answer. We need to know the strength of the solution in weight per volume. I.E. 10mg/ml or 500mg/ounce...etc.