In this study we present two preconcentration methods for Pb isotopic ratio measurement via MC ICP-MS in seawater. One approach features freeze drying of the seawater with subsequent first matrix removal and preconcentration using an offline seaFASTTM system (Elemental Scientific) utilizing Nobias-PA-1 chelating resin. The second approach features a pressure filtration using Empore™ SPE Chelating Disks (CDS Analytical) for parallel preconcentration and first matrix removal. Further purification for both approaches was conducted by a fully automated separation of Pb using DGA Resin (TrisKem International) (Pb recovery >93%) as described by Retzmann et al. (2017). MC ICP-MS (Nu Plasma II, Nu Instruments Ltd.) measurements were conducted in static measurement mode with low mass resolution. Correction for instrumental isotopic fractionation (IIF) was based on standard-sample bracketing adapted from Horsky et al. (2016).