Water sampling (IMAGE) Pensoft Publishers Caption After water filtration the eDNA filter is preserved in ethanol until further processing in the lab. Credit Till-Hendrik Macher Usage Restrictions Credit must be given to the creator. License CC BY 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.