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2nd Gen QuantaDose UVC Light Test Card with (WPV) Word Power Visibility Technology auspowers_batchone Powers Fasteners is the leading2nd Gen QuantaDose UVC Light Test Card with (WPV) Word Power Visibility Technology 2nd Gen QuantaDose UVC Light Test Card with (WPV) Word Power Visibility Technology Designed and Engineered in the USA, the 2nd Edition Professional QuantaDose uses patent pending photochromatic WPV (Word Power Visibility) technology to provide reliable UVC intensity readings in 15 seconds with instant notification of optimal UVC germicidal wavelengths. The QuantaDose