ISO/CIE 28077:2024 PDF

Overview

ISO/CIE 28077:2024 - Photocarcinogenesis action spectrum (non‑melanoma skin cancers) specifies a standardized action spectrum (spectral weighting function) for ultraviolet radiation (UVR)–induced photocarcinogenesis leading to non‑melanoma skin cancers. Prepared by CIE Technical Committee 6‑32 in cooperation with ISO/TC 274, this third edition updates the 2016 version and provides tabulated and graphical effectiveness values used to relate wavelength‑dependent UV exposure to carcinogenic risk.

Key topics

• Scope: Defines the action spectrum for photocarcinogenesis of non‑melanoma skin cancers (squamous and basal cell types).
• Basis of the spectrum: Derived primarily from experimental mouse data (SCUP‑m) and adjusted for human epidermal transmission (SCUP‑h) because direct human spectral data are limited.
• Wavelength range and limits: Effectiveness values are provided from 250 nm to 400 nm; the document notes experimental data are insufficient to specify effectiveness above 400 nm.
• Tabulated and graphical values: Table 1 and Figure 1 present decimal and exponential effectiveness values by wavelength to enable spectral weighting calculations.
• Uncertainties and caveats: The UV‑A1 region (340–400 nm) carries larger uncertainties (notably around 350–390 nm). Historical background and rationale for adjustments and conservative flattening in some UV‑A features are recorded in Annex A.
• Normative reference: CIE S 017/E (International Lighting Vocabulary) for relevant terms and definitions.

Applications

ISO/CIE 28077:2024 is intended for professionals and organizations needing an evidence‑based spectral weighting for UV carcinogenic risk assessment and related technical work:

• Regulators and public health authorities - developing exposure guidelines, risk assessments and policy on solar/occupational UVR.
• Researchers and photobiologists - quantifying wavelength‑dependent tumour risk in studies and models.
• Lighting and lamp manufacturers - evaluating UV emissions from artificial sources against carcinogenic effectiveness.
• Occupational safety and environmental scientists - assessing worker or public exposure to UVR and effects of ozone or environmental changes.
• Dermatology and cosmetic testing labs - interpreting UV exposure risks for sunscreens, phototherapy devices, and protective measures.

Related standards

• CIE S 017/E - International Lighting Vocabulary (normative reference used for terms and definitions).
• Produced in cooperation with ISO/TC 274, Light and lighting (context for lighting‑related applications).

Keywords: ISO/CIE 28077:2024, photocarcinogenesis action spectrum, non‑melanoma skin cancer, UVR, spectral weighting function, ultraviolet radiation, skin cancer risk assessment, SCUP‑h, SCUP‑m.