Question
Asked 9th Apr, 2015
  • Senectud Biotech

Is there a way to remove cover slips from IHC slides?

We need to restain tissue with hematoxylin but can not remove the cover slips after soaking in xylene both at RT and at 37C.  We mounted the cover slips with permount only. Is there some other way to remove the cover slips?

Most recent answer

Ute Neubacher
Ruhr-Universität Bochum
It needs time to remove the cover glases specially when the mountig medium dried out. I recommend to put the slides in Xylene or Toluol for several days (over a week end or so).  Wait until the glases are falling down, rehydrate the slides and couterstain. If you have made your Immuno with DAB don't hazitate to stay longer in Xylene. The dye is stable. Good luck!

All Answers (7)

Marcia Gasis
Heinrich-Heine-Universität Düsseldorf
Hello Albert.
Permount is a toluene based mounting medium. So the best way to remove it is to put the slides in xylene for some time under gentle agitation. The cover slips should fall off the slides (hopefully without the tissue detaching). Maybe you should leave the slides for a longer period in xylene (over night?).
If that doens´t work you could contact the company you got the mounting medium from.
Hope I could help.
2 Recommendations
Denise Paula Muñoz
UCSF University of California, San Francisco
I was going to suggest the xylene as well Albert!
Bindu Balakrishnan
University of St. Augustine
Try leaving the slides in xylene overnight at RT and gentle rocking. The coverslips can be gently removed from the slide the next day
Pietro Asproni
Research Institute in Semiochemistry and Applied Ethology
Xylene at RT, trying once in a while to gently remove the coverslide. 
Ute Neubacher
Ruhr-Universität Bochum
It needs time to remove the cover glases specially when the mountig medium dried out. I recommend to put the slides in Xylene or Toluol for several days (over a week end or so).  Wait until the glases are falling down, rehydrate the slides and couterstain. If you have made your Immuno with DAB don't hazitate to stay longer in Xylene. The dye is stable. Good luck!

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