3-in-1 REUSABLE CARD – The UV & UVC Test Card is double-sided. On the one side, you have two tests: UV light and UVC light, which indicate whether a bulb or light is indeed irradiating the type of UV light that it claims.
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3In1 UV UVC Test Card Intensity UVA Light Identifying Bulb LED Reading
3-in-1 REUSABLE CARD – The UV & UVC Test Card is double-sided. On the one side, you have two tests: UV light and UVC light, which indicate whether a bulb or light is indeed irradiating the type of UV light that it claims.