UV lamps have many applications in the laboratory depending on the model used, including water testing, quality control inspection, nondestructive testing, sanitation, UV curing, gel viewing, mineralogy, arson investigation, TLC, E. coli testing, and sterilization. UV lamps are manufactured to be lightweight but rugged with scratch-resistant paint. Longwave, shortwave, and combination options available. Handheld models are easily capable of being used both in the classroom and in the field. Different models are either plug-in or portable with batteries.