Accurate determination of trace and ultra-trace elements in marine and estuarine environments is an essential part of gaining deeper understanding of the oceans around us. In addition to numerous tools to process samples and reagents in an ultra-clean environment, ESI has developed the seaFAST series of fully automated systems for matrix removal and sample preconcentration. When directly coupled to ICPMS instruments, seaFAST delivers the ultimate detection limits and processing speed for these challenging samples.