Gum Turp is used to remove povidone not mineral turp
Were Placebo in his grave, I suspect he would be rolling in it. His gospel when I first joined the debate was that a soak in mineral turps would remove povidone. Conventional wisdom was that a soak in gum sprits of turpentine available in the US did not do the trick, but a soak in a turpentine substitute, made mainly of xylene and mixed turpenes, would. It did, and still does. Funny thing is a long soak in xylene without the turpenes does the same thing. Some claim a long soak in odorless mineral spirits also does the same thing, but I have never verified this.
I don't feel comfortable disagreeing with f_c at all, and he may perhaps be discussing a solvent I am unfamiliar with when he discusses "gum turps"; if he is discussing the easily found gum spririts of turpentine used to thin paint and make garages smell bad, I respectfully differ with his opinion, based on my personal experiences. Gum spirits of turpentine never seemed at all effective to me at doing anything beyond smelling the place up.