Robust, handheld rechargeable inspection spotlight with a power density at the hot spot of 10,000uW/cm2 and 1500uW/cm2 at 38cm (15″) The TQC UV inspection lantern is used to detect contaminants that react under UV-illumination and cannot be seen with naked eye such as some organic fats, alkaline contaminants etc.. Ideal to inspect the cleanliness of steel prior to painting.