NEN pen (was: autorad cassettes)

Frederick Garbrecht fgarbrec at POST.ITS.MCW.EDU
Mon Jun 14 14:34:50 EST 1993

I have used Rad-Tape.  It is a phosphorescent film that you write on and
then apply to your film.  The places that you write on block the
phosphorescence and appear bright on the autorad.  Works pretty well in my

On 14 Jun 1993, Berthe M. Willumsen wrote:

> Date: 14 Jun 93 10:23:06 GMT
> From: Berthe M. Willumsen <bmw at>
> To: methods-and-reagents at
> Subject: Re: NEN pen (was: autorad cassettes)
> In article <olam-110693153021 at>, olam at (Ola
> Myklebost) wrote:
> > 
> > In article <1993Jun8.131741.20498 at>, don at (donald
> > seto) wrote:
> > > Bel-Art Products also make a pen that is non
> > > radioactive and can be used to mark autorads/films.  
> > 
> > Is that a phosphorescent pen like the outrageously expensive one from NEN?
> > Do you know the price and have a fax no?
> > 
> I purchased the NEN pen several years ago, and have never used it. The ink
> dried up immediatedly, and although I found out that chloroform can be used
> to thin it, I never got it to work satisfactorily. Have others had the
> problem? And found a solution?
> Berthe Willumsen
> Dept. Molecular and Cellular Biology
> Univ. Copenhagen
> bmw at

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