High performance, multi-use Fire Assay Crucibles 55g (for an ore sample of 55g).
Upper diameter: 90mm
Inferior Diameter: 57mm
These fire assay crucibles provide erosion and cracking resistance under harsh working conditions (up to 1300ºC). Universal Fire Assay Crucibles yield longer life, faster fusion, constant melting speed and resistance to thermal shock.
The material of construction is high quality refractory fire clay with high alumina content that makes them resistant to litharge attack.