Flame Test High-Opacity Metallic Gel Pens (Pack of 6)

A flame test is a kind of analysis used in chemistry that helps detect metal ions in a sample. When the sample is introduced to a flame, the flame changes color depending on which element is present. 

.7 mm tips

Metallic Gel Ink
Compatible with Dark Matter Notebooks

Each pack contains 6 unique colors:
Strontium 
Calcium 
Sodium 
Copper 
Selenium 
Cesium