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Red Reactive Opal
(Handy Sheet 300 mm x 300 mm)


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Uroboros has created two unique glass formulas for System 96 that are designed to create an interface colour, or a "reaction", when melted against certain other colours.  This occurs when ions from the two adjacent glasses migrate and mingle when the glasses become hot and fluid. 

Given the right glass chemistry, the commingled ions form a very thin coloured line, or "reaction".  Since Uroboros's formulas react to create a noticeably reddish hue, they named them Red Reactive Transparent, and Red Reactive Opal.

The primary ingredient needed in a glass to generate a reaction colour with Uroboros's reactive glass is copper.  Copper is present in many blue and blue-green glass colours, but in some cases in too low a concentration to create a noticeable reaction.

For simplicity, all System 96 colours have been graded for their potential to react into three categories: Strong, Medium, and Mild.  Click here to see a chart listing all the reactions.  The chart rankings are based on a typical single firing cycle.

The intensity of the reaction colour will get stronger with longer, hotter, or repeat firings because the copper ions have more time to mingle with their reactive partners in the adjacent glass.  You could get a Medium reaction from a colour graded as Mild by firing it hotter, or firing multiple times.

  • Model: Uroboros 60-045-96
  • Shipping Weight: 0.8kgs
  • Manufactured by: Uroboros

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Red Reactive Opal
(Handy Sheet 300 mm x 300 mm)

Red Reactive Opal 60-045-96 (Handy Sheet 300 mm x 300 mm)

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