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BS EN ISO 24443:2021:2022 Edition

BS EN ISO 24443:2021:2022 Edition

$189.07

Cosmetics. Determination of sunscreen UVA photoprotection in vitro

Published By Publication Date Number of Pages
BSI 2022 48
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PDF Catalog

PDF Pages PDF Title
2 National foreword
4 European foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviated terms
3.1 Terms and definitions
10 3.2 Symbols and abbreviated terms
11 4 Principle
5 Apparatus
5.1 Spectrophotometer specifications
12 5.2 Calibration of the spectrophotometer
5.3 Calibration of the UV exposure source
13 5.4 Monitoring of the UV exposure source
5.5 Calibration of the UVA radiometer used to monitor the test sample irradiation
5.6 Substrate/plate
14 6 Test method
6.1 Outline of the test procedure
6.2 Equipment calibration and validation of test plates
6.3 Absorption measurements through the plate
15 6.4 Sample application
16 6.5 Absorbance measurements of the product-treated plate
6.6 Number of determinations
6.7 Determination of initial calculated SPF (SPFin vitro,0), “C” value, initial UVA-PF (UVA‑PF0), and UV exposure dose
6.7.1 Determination of initial in vitro SPF (SPFin vitro,0)
6.7.2 Determination of “C” value
17 6.7.3 Determination of initial UVA protection factor before UV exposure (UVA-PF0)
6.7.4 Determination of the UV exposure dose
18 6.8 UV exposure of sample plates
6.9 Calculation of UVA-PF of plates after UV exposure of the sample
19 6.10 Calculation of critical wavelength of plates after UV exposure of the sample
7 Procedure using the spreadsheet in this document
20 8 Product reference sunscreen
8.1 Formula S2
8.2 Standard P8
9 Test report
22 Annex A (normative) Calibration of spectrophotometer and plate transmission test
26 Annex B (normative) Radiometer calibration to spectroradiometric irradiance procedure
28 Annex C (normative) Computation values: PPD and erythema action spectra and UVA and UV‑SSR spectral irradiances
31 Annex D (normative) PMMA substrate plate surface specifications
34 Annex E (normative) Product reference sunscreen formulations
40 Annex F (informative) Statistical calculations
43 Annex G (informative) Definition and examples of valid results/Factor “C”
44 Bibliography

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BS EN ISO 24443:2021
$189.07