JEOL Probe Users Listserver Moderator: Ellery Frahm, [log in to unmask], Electron Microprobe Lab, University of Minnesota Post a message: send your message to [log in to unmask] Unsubscribe: send "SIGNOFF PROBEUSERS" to [log in to unmask] On-line help and FAQ: http://probelab.geo.umn.edu/listserver.html * All, First, thanks to those who replied with info on Gd standards. Today I need to know, Is there a single mulit-layer crystal that will cover Boron through Oxygen? Thanks in advance, OWen