The UVC lamp is primarily intended to demonstrate the photoelectric effect using a zinc plate and gold leaf electroscope. The lamp emits UVC light with a peak wavelength of 253.7nm and must not be used as a general-purpose UV light source. This lamp is an excellent replacement for the now obsolete Philips TUV6 lamp. The UVC bulb is housed in a robust Aluminium extrusion and is supplied with a 24V d.c. power supply.Technical Specification:Lamp:Wattage: 3WSpectral peak: 253.7nmUV output: 0.16WUV micro watts: 1.7 µW/cm² at 1mAverage Life: 3000 hoursPower Supply:Input: 230V a.c. 50/60 HzOutput: 24V d.c. 0.75A (centre +ve)Replacement bulbs are also available separately (B8R07211)