Standard conversion for pure water is 1ml = 1gm but that doesn't hold for other liquids. Best advice is to consult your GP on dosage.
That's
not relevant anyway, because the weight of a given liquid is
not necessarily indicative of the amount of an active ingredient within it.
What you need to look for on the label is something
similar to '
25mg/5ml'. This (for example) indicates that there is 25mg of the active ingredient in every 5ml of liquid. You then to do the math accordingly to work out how much liquid you need to take in order to get the desired amount of active ingredient.
I'm not sure what the '
30Ch' on your product refers to though.