1. Professional, sophisticated black light tester 2. Spectral spectrum: 360nm~460nm (Peak 405nm, 50% transmittance band: 382nm~428nm) 3. Four test grades options 4. Unique detector structure 5. LSI circuit, reliable and durable 6. External black light detector makes it easy for users to measure at the right position 7. Displays symbol and unit, easy to read Application: ink adhesive curing, UV LED intensity, plant cultivation research, polymer material aging
