[Nhcoll-l] Marker on bone

[Gali Beiner]

Dear Simon, Brian, Fran, Mariana, William and Marilyn -

Thank you so much for all your replies!

The marker proved to be extra tenacious in this case (somebody actually
said to me it's a pity we don't know what marker that was, as it is one we
see doesn't fade!) . I tried ethanol and acetone, plus several other
solvents, but although ethanol and acetone worked a little, the number
remained very bold on the bone. Simon's method (hydrogen peroxide with a
little Ammonium hydroxide) helped lift up some more and somehow did lift
everything off some of the bones but not off all of them  - maybe different
markers were involved, hard to say. In the end I had to give up on the idea
of removing the marker completely or even making the old number unreadable
(and so less confusing) - so I put on a coat of PB72 in acetone,
overpainted that with a layer of white ink, and wrote the correct number in
black ink on top of the white layer. I'm hoping this means that the old
number is well hidden and that any confusion in the future can be resolved
by looking at the info (on "old numbers")  in the catalogue.

Thanks again to everyone, it's great to have such a helpful forum!

Gali

On Wed, May 1, 2024 at 10:30 AM Gali Beiner <gali.beiner at mail.huji.ac.il>
wrote:

> Dear NHColl-listers,
>
> I'm having the bad luck of having to remove an old number written directly
> onto the many bones of an entire skeleton with a black marker, which is
> proving to be far too permanent. Those of you familiar with such tasks
> won't be surprised to hear that the only thing with any effect at all is
> ethanol, but that even so the number is still very much there. I'm hoping
> maybe people here have some tricks up their sleeve that I haven't tried yet
> in effort to remove the marker off the bones. Suggestions, anyone?
>
> Best wishes,
>
> Gali
>
>
>
> --
> Gali Beiner (ACR)
> Conservator, Palaeontology Lab
> National Natural History Collections
> The Hebrew University of Jerusalem
> Berman Building, Edmond J. Safra campus, Givat Ram
> Jerusalem 91904, Israel
> Fax. 972-2-6585785
> *gali.beiner at mail.huji.ac.il <gali.beiner at mail.huji.ac.il>*
>
> *https://nnhc.huji.ac.il/?lang=en <https://nnhc.huji.ac.il/?lang=en>*
>


-- 
Gali Beiner (ACR)
Conservator, Palaeontology Lab
National Natural History Collections
The Hebrew University of Jerusalem
Berman Building, Edmond J. Safra campus, Givat Ram
Jerusalem 91904, Israel
Fax. 972-2-6585785
*gali.beiner at mail.huji.ac.il <gali.beiner at mail.huji.ac.il>*

*https://nnhc.huji.ac.il/?lang=en <https://nnhc.huji.ac.il/?lang=en>*
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.yale.edu/pipermail/nhcoll-l/attachments/20240610/6f153b25/attachment.html>