Dear Robert van Haele, you may contact us under [log in to unmask] I think that our lab is familiar with such problems, but we have to know more details. Yours Hilmar Förstel >Dear Isogeochemists >Please excuse somewhat off-subject request: Does anyone know of a lab that >can offer commercial analysis of oxygen elemental composition of refractory >materials, for example Al2O3 in a metallic mixture. This analysis needs one >of those very high temperature Elementars I think; the oxygen content is >low; XRD isn't precise enough. >Thank you for any leads >Robert Van Hale >