Paraloid B-67 20% wt/vol in White Spirit 15ml in brush applicator bottle. Suited for archival marking in collections (private or museum). A 20% solution of Paraloid B-67 in white barrier provides a protective barrier for an archival marking. 

Whilst you could use this product for a protective barrier when coating pyritic fossils, bear in mind that the solution in white spirit will be slow drying. We recommend instead the Paraloid B-67 in acetone also available on our website.