Qualitative and Quantitative Assessment of Occupational Chemical Exposure Risk R package expoquimR version 0.1.0 Provides a unified toolkit for occupational chemical exposure risk assessment, implementing three internationally recognised methods end to end: the qualitative control-banding methods COSHH Essentials (UK Health and Safety Executive) and the method of the French National Research and Safety Institute (INRS), together with the quantitative statistical procedure of the UNE-EN 689 standard for comparing measured exposure levels against occupational exposure limits. Every step of each method, from hazard banding and exposure scoring to lognormal or normal distribution fitting, one-sided tolerance limits, and monitoring-interval recommendations, is implemented as a small, independently callable, and unit-tested function, so assessments are reproducible and auditable without depending on any graphical interface. Optional 'shiny' applications provide a guided, interactive workflow for occupational hygienists and health and safety practitioners who prefer not to write code. References: UK Health and Safety Executive (2003) <https://www.hse.gov.uk/coshh/essentials/index.htm>; Mallet, Pilorget and Berne (2013, ISBN:978-2-7389-2166-2) "Evaluation du risque chimique" INRS ED 6084; European Committee for Standardisation (2018) <https://www.en-standard.eu/bs-en-689-2018-workplace-exposure-measurement-of-exposure-by-inhalation-to-chemical-agents-strategy-for-testing-compliance-with-occupational-exposure-limit-values/>. Software Depends: R (>= 4.1.0) Imports: stats Suggests: DT, ggplot2, kableExtra, knitr, readxl, rmarkdown, shiny, shinyjs, testthat (>= 3.0.0), tibble, usethis Raúl Aguilar Elena <raguilar@universidadviu.com> Comprehensive R Archive Network (CRAN) Raúl Aguilar Elena [aut, cre] (ORCID: <https://orcid.org/0000-0001-8656-8155>), Ana Delgado-Garcia [aut] (ORCID: <https://orcid.org/0009-0003-7079-5507>), Alejandro Guillem-Riquelme [aut] (ORCID: <https://orcid.org/0000-0002-6373-5237>) MIT + file LICENSE (https://CRAN.R-project.org/package=expoquimR/LICENSE) 2026-08-09 application/tgz https://CRAN.R-project.org/package=expoquimR doi:10.32614/CRAN.package.expoquimR en-GB