And many people also use a black light flashlight in hotel rooms, to look for signs of bed bugs and to make sure the room is as clean as the front desk claims. Professional cleaners and home inspectors use black light flashlights to look for leaks and cracks in the wall that may be undetectable to the naked eye. The latest black light flashlights are useful for identifying counterfeit money, turning up pests, rodents or mites, and also detecting soiled bedding, furniture or rugs. If you have a pet who has occasional accidents, for example, a black light helps identify stains that have faded into the carpet that you don’t even know is there. The best black light flashlights are useful for identifying a wide variety of things and are a good addition to your basic household toolkit. They may have been a fun accessory for an after-school show, but these days, the best black light flashlights are a useful tool to have on-hand to keep your house clean and germ-free. There is a specific cohort of adults who remember the furtive thrill when, on MTV’s dating show Room Raiders, the contestant retrieved the black light flashlight to scan the room for “substances.” Now that we are all grown-ups, we know that black lights are used to identify a wide variety of materials, like blood splatter if you’re a detective on a cop show, or pet messes on the carpet if you’re an average human. The UV light should be lightweight and small in size so it’s easy to slip into a bag or purse and take with you wherever you need to go.If you purchase an independently reviewed product or service through a link on our website, Rolling Stone may receive an affiliate commission. If you want to use your UV light outdoors, consider portability as a purchasing factor.In some UV lights, you can adjust the field of view by widening or narrowing the lights. In some UV lights, there is only one setting, while in others you can find multiple modes such as strobe and high or low settings. Consider the modes of light that the UV light can emit.You can also find UV lights that are powered by electricity, and come with a power cord and remote control. Other times, you will need to purchase your own batteries. Many UV lights run on AA or AAA batteries, which are sometimes included with the package. Be aware of the power source of the UV light you’re interested in, as this can be an added expense. ![]() Those who are interested in disinfecting a small space can also use a powerful UV light to do the job, which is specifically designed to sterilize an environment with ultraviolet light. Pet owners may want to get one that illuminates animal urine, saliva or other invisible stains so that they can clean them properly. Consider how you want to use the UV light and select one that is designed specifically for that use.Be sure to check for the nanometers of the UV light’s wavelengths, and opt for one that is below 400 nm. If the light is not emitting at the right wavelength, then it will not illuminate the invisible elements you want to see. The main element you want to look at is the wavelength of a UV light.A UV light can help you spot counterfeit bills, find bodily fluid stains, inspect minerals and gemstones, and look for certain insects and reptiles. What can you use a UV light for? There are a number of reasons why you may need to see more than meets the eye. A wavelength of around 360 or 365 nanometers is recommended. Keep in mind that if you purchase a UV light with the wrong wavelength, you may not be able to illuminate the things you want to see with the light. If that is your goal, you will need a UV light that emits at 400 nanometers or below. Not all UV lights can induce fluorescence. ![]() Similar to visible light, UV light is measured on a wavelength in nanometers. However, instead of emitting the standard light you’d use when you can’t see in the dark, this kind of light uses ultraviolet light from LED technology.īe sure to get a UV light that has the correct wavelength for what you need it for. This means that the UV lights help to detect these elements.Ī UV light often looks like a regular flashlight that emits white light. ![]() However, when a UV light comes into contact with certain elements, such as paint, minerals, dyes and bodily fluids, it begins to fluorescence. This type of light is not visible to humans. UV, which stands for ultraviolet, is a kind of radiation or light energy. If you’ve ever wanted to see more than you can with the naked eye, a UV light can help.
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