Butvar B-76 for Autunite or Fossil preservation – Eight Grams
Butvar B-76 is a polyvinyl butyral (PVB) resin commonly used as an adhesive and consolidant in conservation, particularly for delicate or porous materials like wood, bone, or stone. It is valued for its clarity, flexibility, and reversibility, making it ideal for stabilizing fragile archaeological or paleontological specimens. Butvar B-76 dissolves in solvents like ethanol or acetone, allowing precise control during application and easy removal or retreatment if needed.
Here are the suggested steps for using Butvar B-76 to stabilize autunite:
- Clean the surface of the autunite using a soft brush and water to remove any dust or dirt.
- Dry the Specimen for 24 hours by storing it a safe room temperature environment. (Wet autunite will not stabilize properly and a white residue will result.)
- Document the weight of the specimen to be stabilized.
- Dissolve Butvar B-76 in a suitable solvent, such as acetone or 100% ethanol, to create a solution with a concentration of around 5%. This can be done by adding 5 grams of B-76 to 95 grams of solvent and stirring until it is fully dissolved.
- Apply the Butvar B-76 solution to the surface of the autunite. It can be done using a dropper, or the specimen can be dipped into the solution.
- Immediately after the B-76 application, use light puffs of canned air to blow away any excess solution and prevent pooling.
- Allow the Butvar B-76 to dry completely, which can take several hours depending on the environment.
- Any remaining white or shiny residual B-76 can be removed with a quick rinse of solvent followed by air.
NOTE: By purchasing this item you agree that you have read our
WARNINGS and NOTICES ! (also serves as FAQ’s)
