Radsafers, Does anyone have any experience with what it takes to get validatable data using an XRF for soils using the fundamental paramaters setup? If so your help would be much appreciated and you could contact me at e-mail Jeff.Vollmer@WSSRAP.com or phone (314)441-8086 ext. 3568 Thanks, Jeffrey S. Vollmer Healt Physicist - Jacobs Engineering Group WSSRAP 7295 HWY. 94 South St. Charles , Mo 63304