There IS a method called " Cold Water Extraction ", which takes
advantage of the fact that Codeine (and Hydrocodone) are very soluble in
cold water, while APAP is NOT.
The extraction is done using a coffee maker. The tabs are dissolved
in water warm enough to put the tablets into solution. Then the water
and hydrocodone solution is slowly cooled. You will see the APAP begin
to " fall out " of the solution. Continue to cool it a bit longer, then
pour the solution through a drip coffee filter. The APAP will become
trapped in the filter and the water and hydrocdone will pass through the
filter into the glass under the filter. Make sure you only use enough
water to dissolve the tablets.