OL UV-40 Ultraviolet Irradiance Standard

The OL UV-40 consists of a stable, 30-watt deuterium lamp with an ultraviolet transmitting suprasil window. The OL UV-40 uses the OL 46D Deuterium Lamp Power Supply. Optronic Laboratories also recommends the OL 63 Adjustable Lamp Holder Mount.

Prior to calibration, each lamp is seasoned for 24 hours. Stability tests indicate that after the initial burn-in, the irradiance generally remains constant to within ±2% for a period of 50 hours use. The aging of the standard is not a function of the shelf life.