Salamander Graphite Crucibles

Natural graphite crucible with pouring spout, bonded with silicon carbide and fire clay. Lined with mullite for long life. These crucibles are resistant to high temperatures and thermal shock. Clay crucibles need to be treated before use for extended life. Fill about 35% of the crucible with a mix of 50% Borax and Boric Acid. Heat the crucible gradually until the mixture melts. Carefully tilt the crucible so as the coat the entire inner surface. Then pour the excess away and allow the crucible to cool to room temperature.