Trial #5 - Closer Look

The French vanilla fine frit turns a creamy  white color after firing unless it is near cyan.   These two colors being positioned next to each other is a perfect example of reactive colors.  The heat from firing provides the catalyst to activate the chemical reaction between these two frits.  Notice in the example below that the places where the French vanilla frit is the most dense, the particles that are not in contact with the cyan frit have turned white but the particles that have ANY contact with the cyan have turned a dirty brown.  This layering effect is the easiest to view in the third example below.

Trial #5 - Layers for reactive test.  Bottom layer is clear glass, then rectangle of silver foil, followed by white fine frit in lower left, clear string, French vanilla fine frit, then light cyan fine frit.  All is topped with clear glass. 

Lowest image - after firing, French vanilla (both dirty brown AND white.)  Next layer is light cyan and lowest layer is silver foil. 

In this close-up, the layering effect allowing the surface French vanilla frit to remain untouched by the cyan frit has allowed it to turn white and NOT react.