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| Pagina principalRaw MaterialsScarva Raw Materials Colemanite RM1020 |
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Scarva Raw Materials Colemanite RM1020 From £6.31
 A naturally occurring insoluble source of boron in glazes. A powerful primary or secondary flux, it intensifies the effect of colouring oxides and increases craze resistance of glazes. Formula: 43.9% B2O3, 26% CaO, 4.5% SiO2
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