Dear List members, I need to measure the oxygen isotope composition of a 1M HCl solution, by CO2-equilibration with an Isoprep 18-OPTIMA. Does anybody have experience or know it there are problems with contamination and/or corrosion? Thank you Stefano --------------------------------------------------------------- ETH Zurich Dr. Stefano Bernasconi Geologisches Institut CHN-E19.1 Universitätstr. 16 8092 Zuerich Switzerland Tel. ..41-44-632 3693 fax: ..41-44-632 1075 e-mail: [log in to unmask]