SPF UVA, UVB measurement (Boots Star/PA equivalent)
In vitro UV spectrophotometric assay for SPF (290-320 nm weighted) and UVA-PF (320-400 nm) via ethanol dilution, sonication, filtration, and transmittance in quartz cuvettes.
Sample Requirement:
Type: semi-solid (sunscreen cream/lotion)
Amount: 2 grams
SPF / Sunscreen Efficacy
SPF / Sunscreen Efficacy Measurement Service
In Vitro SPF and UVA-PF Measurement by UV Spectrophotometry
In vitro UV spectrophotometric assay for Sun Protection Factor (SPF, 290-320 nm weighted) and UVA Protection Factor (UVA-PF, 320-400 nm) via ethanol dilution, sonication, filtration, and transmittance measurement in quartz cuvettes.
Sample Requirement:
Type: semi-solid (sunscreen cream/lotion)
Amount: 2 grams
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