Materials (image) Estonian Research Council Share Print E-Mail Caption After determining the humic and fulvic acid content in peat and conducting the XRD analysis of elements and minerals, the possible test mixtures were modeled and small test pieces printed. On the photo, Toomas Tenno is showing these test pieces. Credit Merilyn Merisalu Usage Restrictions None 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.