Question

how many milligrams of epinephrine is needed to prepare 3 L of a 1:30,000 solution?

Answer 1

1:30,000 means, you need 1 part epinephrine in every 30,000 part of water.

3 L is 3000 ml.

So, 1/30,000 = x/3000

X = 0.1 mg.

0.1 mg should be diluted in 3L.