Data and code for: Redefining the metrological limits of hydrogen adsorption in geological materials

This repository contains the raw experimental datasets and analysis scripts supporting the study: "Redefining the metrological limits of hydrogen adsorption in geological materials: implications for underground energy storage". Contents:- Raw differential pressure (ΔP) measurements for He blank and H2 adsorption experiments- Processed adsorption isotherm datasets- Python scripts for baseline fitting, residual analysis, and LOD/LLOQ determination- Supporting metadata and documentation The data were acquired using a dual-cell differential volumetric apparatus under controlled temperature and pressure conditions (up to 100 bar, ~291 K). The provided scripts reproduce the He blank calibration, residual statistics, and metrological threshold derivation presented in Section S4 of the Supplementary Information. All files are structured to ensure full reproducibility of the reported results.