Adsorption Isotherm Models R package AdsorpR version 0.1.0 Model adsorption behavior using classical isotherms, including Langmuir, Freundlich, Brunauer–Emmett–Teller (BET), and Temkin models. The package supports parameter estimation through both linearized and non-linear fitting techniques and generates high-quality plots for model diagnostics. It is intended for environmental scientists, chemists, and researchers working on adsorption phenomena in soils, water treatment, and material sciences. Functions are compatible with base 'R' and 'ggplot2' for visualization. Software Imports: ggplot2, stats Suggests: testthat, knitr, rmarkdown Jajati Mandal <J.Mandal2@salford.ac.uk> Comprehensive R Archive Network (CRAN) Jajati Mandal [cre], Sandipan Samanta [aut] GPL 2025-04-09 application/tgz https://CRAN.R-project.org/package=AdsorpR doi:10.32614/CRAN.package.AdsorpR