Radiometers are an important part of fluorescent examinations. Many industry standards require black lights' UV-A and white light intensities be verified every day before their use; this is where radiometers come in. Radiometers are a quick way to ensure your black lights' UV-A intensity is running at it's optimal output thus increasing the likelihood of detecting indications. They're also a great way to check that there's a limited amount of white light.
Karden Sales carries a wide array of radiometers that measure UV-A black light, visible white light, and blue light. They're light-weight, portable, and rugged - ideal for use out in the field or in the lab.