PXRF Spectrometer in Use (image) American Society of Agronomy Share Print E-Mail Caption Part science fair, part hard-core science: Camille Weindorf scans soil samples with a portable X-ray fluorescence (PXRF) spectrometer mounted in a hooded test stand. Her collection of samples is featured on the shelf behind her. Credit David C. Weindorf. Usage Restrictions Please use with story only. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.