Dear Isogeochemists, I'd like to ask anyone who has used or is currently using a Sercon 20-20 IRMS for their opinion and experience of this machine regarding application, sensitivity, reliability, maintenance issues, etc. Also, if anyone has used the 20-20 interfaced with the Sercon TOC-Cryoprep, I'm interested to know what you might have to say about this configuration. I'm also interested in how it compares to Thermo instruments (We currently have a Delta V plus). Thanks very much! Melissa *************************************************************** Melissa D. Bautista BEnvSc (Hons) IRMS Research Technician Centre for Coastal Biogeochemistry Southern Cross University School of Environmental Science and Resource Mgmt P.O. Box 157 Lismore NSW Australia phone: +61 266 269 565 mobile: +61 431 928 278 email: <mailto:[log in to unmask]> [log in to unmask] http://www.scu.edu.au/schools/esm/ccb ***************************************************************** Ventis secundis, tene cursum..