This Pen-Ray® standard mercury lamps are low pressure, cold cathode UV lamps manufactured from the highest grade of quartz material. This design allows the electrodes to be positioned at one end of the lamp providing easy access into small apertures. These are individually created by master craftsmen to ensure quality and reliability. These lamps provide a high degree of stable, isolated spectral line accuracy and long life (3000+ hrs). Lamp emits mercury spectrum with the primary energy. Its simplicity of physical dimensions lends itself to a multitude of applications. Designed for sterilization, fluorescent inspection, photochemical reaction, interferometry, chromatography, photometric and fluorometric instruments, spectroscopic wavelength calibration, monochromatic sources for optical systems and reference studies. 3SC-9 Model. 11.6in Length. 254nm Shortwave UV Source. 9in Lighted Length. 0.375in dia. Quartz. 0.5in dia. Handle. 16in Cord Length. 800mW/cm² Typical Intensity at 0.75in (for 5mA AC), 3300mW/cm² Typical Intensity at 0.75in (for 15mA AC), 5400mW/cm² Typical Intensity at 0.75in (for 25mA AC), 6700mW/cm² Typical Intensity at 0.75in (for 35mA AC), 6900mW/cm² Typical Intensity at 0.75in (for 50mA AC). 30°C Lamp Body Temperature (for 5mA AC), 39°C Lamp Body Temperature (for 15mA AC), 48°C Lamp Body Temperature (for 25mA AC), 54°C Lamp Body Temperature (for 35mA AC), 64°C Lamp Body Temperature (for 50mA AC). Standard Connector. 1000mA Max. Primary Current. 26mA (Average) Lamp Current. 640V Starting/560V Operating. 2800VAC Open Circuit. UVP® #: 90-0004-01.