Anyone out there using Longmire's solution as a preservative and knows of any negatives with respect to impacts on N and C isotopic composition? I know folks are using this to preserve samples for eDNA, but I haven't found anything specific on impacts to N and C isotopes. Thanks, David -- Office/Lab Location: Green Earth Science Building, Rm. 331, 332, 334 https://pangea.stanford.edu/people/david-mucciarone Mailing/Billing address: David A. Mucciarone Stanford University - Earth System Science 473 Via Ortega, Rm. 140 Stanford, CA 94305 650-723-0817(O), 650-804-6403(M) Ship to address: David A. Mucciarone 367 Panama Street, Rm. 331 Stanford, CA 94305