Small glass acid testing stone that is dark and shows results clearly. Precious metal acid testing stone should serve you for hundreds of chemical tests. Test acid is normally used to test gold, silver and platinum. This smaller style stone makes it an excellent choice for a portable gold test kit and offers a high quality surface for your testing chemicals. Used when using test acids for gold jewelry and watches.
- Black glass acid testing stone offers high quality acid test surface that shows results clearly
- Use to test gold, silver and platinum with precious metal testing acids
- Glass test stone measures 2" x 1-1/2" x 3/16" inches