United Scientific™ Cobalt Glass Plates, 4" X 4", Pk/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.
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.