Guidance: Radon in dwellings: validation scheme for measurements

Validation scheme for organisations supplying passive radon detectors to prove their competence in measuring radon levels.

from Public Health England - Activity on GOV.UK https://www.gov.uk/government/publications/radon-in-dwellings-validation-scheme-for-measurements
via IFTTT

source https://tennissurfacingspecifications.tumblr.com/post/178506364989