PNNL GRaDER 1 (IMAGE) DOE/Pacific Northwest National Laboratory Caption PNNL scientists will test and evaluate commercial radiation detectors in an instrumental laboratory with equipment like this pressure chamber. Credit PNNL Usage Restrictions None License Licensed content 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.