January 11, 2002, Newsletter Issue #72: Toxic Materials

Tip of the Week

Toxic Elements
Silica: Sources - quartz, flint, frits, feldspars, clays and glazes
Vanadium: Sources - vanadium pentoxide and ceramic colours.
Cadmium and selenium: Sources - ceramic colours and glazes
Lead: Sources - Lead oxide, frits and glazes
Chromium: Sources - Chrome oxide and some ceramic colours ( greens)
Copper: Sources - copper oxide, carbonate and some ceramic colours
Zinc: Sources - zinc oxide, some ceramic colours
Borax: Sources - borax frits

See individual materials their toxic properties and safety precautions on site.

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