Cobalt Glass Plates, 2″ x 2″, pack of 6
High-quality dark blue cobalt glass filter is used in sodium and potassium salt flame tests. When a flame is viewed through this filter, the color orange is blocked so that a violet-colored flame is visible. Sold as packs of 6.
Also Available
3″ x 3″ Glass Plate – $30.00
4″ x 4″ Glass Plate – $45.00