... chemical etching resistance High Quality 99 al2o3 Alumina Heat-resistant Ceramic Refractory CrucibleSpecificationsAlumina Refractory Heat- ... crucibles 5ml,10ml,15m,l20ml,25ml,30ml,50ml,100ml,150ml,200ml- 1500ml and custom-tailor.Industrial alumina ... of industrial analysis. Alumina ceramic crucible include: arc alumina crucible, square alumina crucible, rectangle alumina ceramic crucible, column ...