CRM-ASP-Mus-d is a thermally sterilized homogenate of mussel tissue (Mytilus edulis) contaminated with domoic acid (DA) and some of its isomers. Each unit contains two ~4 g of the homogenate. The DA concentration is 49 µg/g. Used in conjunction with CRM-DA-f, this CRM will assure the reliability of your domoic acid analyses.