Marielle:

Try Soluvar.  The main ingredient in Soluvar (a Liquitex product) is Acryloid
B-67.  B-67 is soluble in mineral spirits.  Soluvar is used to topcoat a label
when there are solubility problems with the ink (e.g., mineral spirits does not
usually dissolve an ink that is soluble in acetone). Soluvar is available from
most art supply stores.  

Susan Maltby, Conservator
Adjunct Professor, Museum Studies Programme
University of Toronto

Quoting Marielle Fortier <[log in to unmask]>:

> Hello Museum-L members,
> 
> I have a problem that I just can't get my head around.  For the last few 
> years I have been using b-72 and b-67 as my labeling layers (one for top and
> 
> one for bottom). These had been made by my mentor in her lab.  At a previous
> 
> job we had only used b-72 for a top and bottom layer.  Well my supply of 
> b-72 has hardened and my b-67 has yellowed so I ordered from University 
> Products Clear and white acryloid. Yesterday I used the clear acryloid for 
> the first time.  I let the bottom layer dry, used my handy pigma pen and 
> applied the number...let dry, or so I thought and went to apply the top 
> layer. The whole number came off as soon as the brush for the acryloid 
> touched it. ( I have experimented 3 times and still can't get the number to
> 
> stay on safely between two layers) What am I doing wrong? (Besides using the
> 
> same material for a base and top coat? Or is that my problem?)  Am I not 
> letting the pigma ink dry long enough, or is it as simple as not using the 
> product correctly.  Any insight will be much appreciated.
> 
> 
> Marielle
> 
> **********************
> Marielle Fortier
> Museum Registrar
> Norwich University Museum
> Northfield, Vermont
> **********************
> 
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