[NHCOLL-L:4526] Re: Mold

[John E Simmons]

This does look like mold, but at an RH of 43%, it is most probably inactive
(unless the substrate it is on is very damp).  If it is confirmed as mold,
then you should try cleaning by simply brushing it off.  Wear a dust mask
and work in an area away from the collections (preferably under a fume hood,
or outside).  If the mold is inactive, you may not need to use alcohol or
acetone or anything else.  I don't know how effective acetone is for killing
mold.

Why are you thinking of coating the specimens with acryloid?

--John

On Thu, Sep 17, 2009 at 2:04 AM, Dr Heidi Fourie <hfourie at nfi.museum> wrote:

>  We have now decided to firstly remove the plant collection which might
> not have mould and then tackle the mould in the room where it is present.
> Our thoughts are to use Acetone as the fossils are covered with Glyptal,
> remove the frames and then maybe recover with Acryloid.
> Will this be feasible?  Do we still need to use the ethanol?
> The strangest thing is that the humidity is only 43 % and as low as 33%
> with temperatures varying between 19 and 23 degrees C.  Very odd.
> I'll have it confirmed as being mould today.
> Heidi
>
> Dr H. Fourie
> Curator: Vertebrate Palaeontology
> Transvaal Museum
> Tel: 012 3227632
>



-- 
John E. Simmons
Museologica
128 E. Burnside Street
Bellefonte, Pennsylvania 16823-2010
simmons.johne at gmail.com
303-681-5708
www.museologica.com
and
Adjunct Curator of Collections
Earth and Mineral Science Museum & Art Gallery
Penn State University
19 Deike Building
University Park, Pennsylvania 16802-2709
jes67 at psu.edu
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