Cosmetics. Analytical methods. HPLC/UV method for the identification and assay of hydroquinone, ethers of hydroquinone and corticosteroids in skin whitening cosmetic products1 Scope This European Standard specifies a HPLC UV method for the identification and quantification of hydroquinone, 3 ethers of hydroquinone and 4 corticosteroids most frequently found in illegally sold skin whitening cosmetic products: clobetasol propionate, betamethasone dipropionate, fluocinonide and fluocinolone acetonide. This standard also gives HPLC UV methods for the identification of 38 corticosteroids that may be found in skin whitening

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By using this Standard

Note 1: Observe that all demands in EN ISO 354 still should be fulfilled

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BS 5942-3 provides an object that lays down the minimum requirements for disk record playing units falling

BS EN 61158-6-11 provides common elements for basic time-critical and non-time-critical messaging communications between application programs in an automation environment and material specific to Type 11 fieldbus

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Management and chartered accounting institutes