30% acetic acid solution should wash it out (exercise some care, it's quite a strong vinegar).
Hypochlorite and peroxide will bleach the stain, but technically speaking the leftover oxidized species will still be stuck in there, just colorless. Artem www.harkerbio.com "making lots of *really tiny* drops... for fun and profit" - Cosmic Cats approve of this message On Fri, Jun 9, 2017 at 6:21 PM, Tomas Malinauskas < tomas.malinaus...@gmail.com> wrote: > Dear Reza, > I used hydrogen peroxide (~0.1-2%?) to remove rhodamine stuck on > Superdex columns. "Pink" columns turned "white" after this kind of > treatment. > Hope that helps, > Tomas > > On Fri, Jun 9, 2017 at 10:43 PM, Reza Khayat <rkha...@ccny.cuny.edu> > wrote: > > Hi, > > > > Sorry for the non crystallography question. We're using Rhodamine for > labeling some material that we need to run through our FPLC. It seems that > the Rhodamine is getting stuck to the PEEK tubing. Anyone has experience > with successfully removing the Rhodamine from the tubing? Thanks. > > > > Best wishes, > > Reza > > > > Reza Khayat, PhD > > Assistant Professor > > City College of New York > > Department of Chemistry > > New York, NY 10031 >
