HQRP 365 nM 9 LED Professional UV Ultraviolet Inspection / Detection / Identification Flashlight / Blacklight + HQRP UV MeterCategory: Ultraviolet Sunlight MeterHQRP® 365 nM UV LED Flashlight plus HQRP® UV Meter; Aluminium Body, Water Resistance, Light on By on/off Switch; LEDs: 9, Wavelength: 365-370 nanometer; Powered by 3 x AAA batteries (not included); 200 days Warranty!HQRP® 365 nM UV 9 LED Flashlight ! The application is perfect for leak, rodent, painting, hotel room, gemstone and mineral inspection, china, pottery repair detection, art forgery detection, scorpion illumination, security control, document and forgery analysis, currency and bill verification, and much more. Can be used to inspect hotel sheets before use to see if the beds have been changed as some bodily fluids will fluoresce under UV light. Automotive repairmen often use UV leak detection systems for the repair of air conditioner leaks, oil leaks, sunroof leaks, cooling system leaks and oil leaks / Porcelain Repair Checks / Genuine Works of Art Inspection. The urine of many animals, including cats and rodents will fluoresce under UV. To determine rodent presence, simply illuminate the area in question with a UV light. Dry rodent urine glows a blue-white if fresh to a yellow-white if old. Rodent hair glows blue-white and is easily identified. UV lights are used for Art forgery detection: many modern inks, paints and dyes may look identical to old colorings under visible light. However, under UV, differences can be seen because the chemical composition of newer substances usually includes synthetic materials. UV lights are often used to reveal fluorescent activity in gem materials aiding in identification. Due to the intensity of this UV LED device UV protective glasses are recommended. Do not look into this device while operating nor shine in any person's eyes.HQRP UV Meter: This meter shows you the level of UV and helps you protect your eyes and skin from negative sunlight effect. The color of the meter changes from very light purple to dark purple depending on the intensity of the UV lighting. The darker the purple color is, the more intense is the UV lighting.