All Vilber's radiometers use a silicon photo-electric sensor for a direct measurement of the UV intesity and thus do not convert UV into visible light.
The powerful UV lamps from Vilber Lourmat are available in three wavelengths: 254 nm, 312 nm, 365 nm or combinations thereof.
Germicidal UV lamps of 254 nm prevent contamination in research laboratories.
The BL-Black-Light lamps provides a large light spectrum with 365nm UV and visible light.
The lamps are removable, the wavelengths can be chosen according to the application (choice between 254 nm, 365 nm or 312 nm)