Hey this may come under the category of stupid question but here goes. I got a bottle of liquidex from a friend he is reliable source but I forgot to ask Hume the concentration as I have read that liquidex comes in different concentrations such as 4mg per ml and so on, the bottle does not have the original label as it needed to get passed customs my friend is away at present and I am wondering if there is anyway I can find out the concentration of the liquidex in order to work out my dosage it is a yellow liquid with a dropper in a glass bottle it stinks to holy hell can anyone help out or am I stuck until my friend gets back thanks guys