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BS EN ISO 23698:2025 Cosmetics. Measurement of the sunscreen efficacy by diffuse reflectance spectroscopy >
BS EN ISO 23698:2025 Cosmetics. Measurement of the sunscreen efficacy by diffuse reflectance spectroscopy, 2025
- undefined
- 3.1 Terms and definitions
- 3.2 Symbols
- 5.1 In vitro UV spectrophotometer
- 5.2 In vitro substrate/plate
- 5.3 In vivo diffuse reflectance spectrometers (DRS) specifications
- 5.4 Monitoring the DRS systems [Go to Page]
- 5.5 Test method [Go to Page]
- 6.1 General
- 6.2 In vitro measurement preparation [Go to Page]
- 6.3 In vitro measurement
- 6.4 Determination of Avt0
- 6.5 Determination of the UV exposure dose
- 6.6 Measurement of in vitro sunscreen-treated plates post-irradiation [Go to Page]
- 6.7 Determination of the hybridization wavelength [Go to Page]
- 7.1 General
- 7.2 Determination of SRPD(λ)
- 8.1 Determination of AHDRSi(λ) [Go to Page]
- 8.2 Calculate test material SPFHDRSi
- 8.3 Calculate test material UVA-PFi
- 8.4 Critical wavelength calculation
- 8.5 Calculation of the mean and standard deviations for SPF and UVA-PF
- 8.6 Statistical criterion
- 8.7 Reference standards for SPF and UVA-PF [Go to Page]
- 8.8 Data rejection criteria [Go to Page]
- 8.9 Test failure criteria
- 9.1 General
- 9.2 Data in tabular form for each test subject [Go to Page]
