Sun Protection Factor (SPF) Measurement by UV- Vis Spectrophotometry
Experiment to test the SPF and PA value for active sample to determine the sunburn protection rate on human skin.
Sample Requirement:
Take a sample volume of 30 grams. The sample must be homogeneous and not separated.
Sample Count:
Accepts between 1 and 3 samples.
SPF / Sunscreen Efficacy
SPF / Sunscreen Efficacy Measurement Service
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
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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