Ace Glass 10175-17 Drierite 6 Mesh 1lb

The granules of calcium sulfate are impregnated with C.P. cobalt chloride. On dehydration, the active desiccant assumes a distinct blue color. In use, the color changes to a rose-red as the margin between the exhausted and active desiccant progresses through the tube or tower. 6 mesh, 1lb jar.