4 re seal the pouch and gently mix the components and 5 dispose of the pouch in the normal trash the volume of the pouch and amount of activated carbon contained in the pouch dictate the approximate medication treating capacity for optimal results it has been found that the volume of water added and the amount of activated carbon contained in the pouch should both be about three times or more the approximate medication capacity on a weight basis in some cases the waste medication may be one indicated as clearly abusable this includes opioids such as fentanyl morphine hydromorphone etc in this circumstance the present concept provides a system where the medication cannot conveniently be recovered later from a used kit by others for abuse purposes fig3 depicts a plot of a uv vis spectrophotometry scan of a 37 7 mg l solution of fentanyl citrate the absorption from 200 240 nm is due to the presence of fentanyl citrate in the solution and the magnitude of the absorbance is directly related to the dissolved concentration of that compound it is readily seen that the concentration of the drug is significant fig4 represents a second uv vis spectrophotometry scan plot of the solution of fig3 after 5 minutes of contact with activated carbon a dramatic reduction in the amount of absorption from 200 240 nm is seen the data shows that an estimated 97 of the fentanyl citrate had been removed from solution by 5 minutes of contact with activated carbon only 11 micrograms from the original content of 377 micrograms of fentanyl citrate remained in solution to measure whether the fentanyl could thereafter be recovered into an abusable form the activated carbon utilized to adsorb the fentanyl citrate from the solution.