Above is not to be performed and was posted to show that is it possible to separate polar and non-polar substance from each other. Again, text below is work of fiction and I take no responsibility for your action
It is possible to extract gelling agents from the solution if they were just added to the ketamine + saline mix, however if they were implemented into ketamine formula itself (is that possible?) I don't know if it can be achieved. Not with the ordinary kitchen chemistry anyway.
Most likely gelling occurs because of some sort of binders added to the formula. Ketamine is
polar therefore it can be dissolves in polar solvents such as Methanol. Now if gelling agents that were added to the mix at the factory, are non-polar, it would be a breeze to separate. Just pour the whole vial into methanol, shake it up, let is settle, add non-polar solvent (ex. petrolium ether), shake up the whole thing vigorously, let is separate into layers. Now all ketamine is in methanol layer, and all gellers are in petrolium ether layer. Siphon of methanol layer, discard petrolium ether layer (or you can add some more methanol to it and get last bits of ketamine that are floating on top) Being highly volotile, methanol will evaporate pretty fast (of course if you got pure product w/o any additives such as water!), leaving you with crystals of K. Above synthesis was made-up thinking logically and you would succed IF and only IF, gelling agents were
ADDED to the solution, and not IMPLEMENTED into ketamine when synthesizing it at the Fort Dodge's lab, and if gelling agents that were ADDED to the ketamine+saline mix are NON-POLAR.
If they are polar, one would need to find out names of gelling agents, and their chemical properties. Perhaps they would crystalize at the specific tempreture, and could be filtered out........who knows