This collection contains data for paper "Single chamber Mg/Ca analyses of Globigerinoides ruber for paleo-proxy calibration using femtosecond LA-ICP-MS" (Fischer et al., 2024). When using the data, please refer to the paper mentioned above. If further data needed, please contact the corresponding authors. All files are UTF-8 encoded. Each file contains a tab-separated table, which is preceded by a header describing the individual columns.