Most often the liquid used is alcohol, so that the alcohol level by volume in most stock Bach remedies is between 25 and 40%[5][better source needed] (50 to 80 proof). The solutions do not have a characteristic scent or taste of the plant because of dilution. The dilution process results in the statistical likelihood that little more than a single molecule may remain; it is claimed that the remedies contain "energetic" or "vibrational" nature of the flower and that this can be transmitted to the user.[3] The solutions are described by some as vibrational medicines,[6][better source needed] which implies they rely on the pseudoscientific concept of water memory.