Cobalt Glass Plates, 4 " x 4 ", Pack of 6

Details:

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.This content is hosted by a third party (youtube.com). To view external content you must agree to cookies.Accept Cookie