Thread: cullet shortage
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Old 02-03-2018, 06:41 PM
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Pete VanderLaan Pete VanderLaan is offline
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Spectrum 2.0 has no borax . It was the SP 87 clone knock off. Sys96 was indeed high borax but none was what you might consider excessive. It's really more a question of what can't molecularly combine in the glass. So, it gasses off.

Cristalica would not appear to have a high borax content based on the formulation but they way it hits furnaces suggests otherwise. If you count molecules, which is the mole theory of glass, it presents a very different picture. Your furnace is the witness. Borax attacks fireclays and silicates. It's the yellow stain. It's your furnace dissolving.
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