You might be able to tell once you draw it out. Kinda depends on a few things but somebody might be able to help you out just by the color, thickness, etc. I'd draw them all out in the syrynges and then see what ya got as far as color etc. I don't know what you ordered but for example if you end up wit 10 pins filled with crystal clear oil and lets say 5 with a darker oil you might be able to use process of elemination. Just a thought.