Selenium (Se) System 2 Electrodeless Discharge Lamp

This System 2 EDL is the selenium light source for the PinAAcle^® 500, 900F, 900H, 900T and 900Z atomic absorption spectrometers. Selenium, or a salt of selenium, is sealed in a quartz bulb containing an inert gas; when the RF field from the driver is applied, the gas ionizes and the coupled energy vaporizes and excites the selenium, which emits its characteristic spectrum. An EDL is much brighter than a hollow cathode lamp at the selenium resonance line of 196.0 nm, which gives better precision and lower detection limits for elements whose hollow cathode emission is weak. PerkinElmer uses this lamp for selenium in its graphite furnace and hydride generation methods, for example U.S. EPA Method 200.9 on the PinAAcle 900T at 196.0 nm, 2.0 nm slit and 280 mA.

The lamp sleeve holds the pre-aligned bulb and has the same outside dimensions as a PerkinElmer 2 in. hollow cathode lamp, so it fits the same lamp mounts and turrets, and the coded adapter lets instruments with an automated turret set up the lamp automatically. It is used with a System 2 EDL driver, which connects to the RF power supply built into every PinAAcle instrument; one driver is needed for each lamp position in which an EDL is run. A locking pin on the driver prevents operation unless the sleeve is correctly installed.

The lamp is warranted to meet its intensity and absorption specifications for six months or 500 hours of operation, and to light and emit the selenium spectrum for two years or 1,000 hours, from the date of shipment.

• EDL driver for PinAAcle and other instruments with a built-in EDL power supply: 03030997 (2.1 ft cable; extension cable 03030998); driver with long cable for an external power supply: 03030793; adapter N3150303 for use of either driver on AAnalyst 200/400
• Hollow cathode alternative: Lumina™ selenium lamp N3050172; for instruments of other manufacturers, the Atomax™ selenium lamp N2025349
• Other System 2 EDLs: As (N3050605), Sb (N3050670), Bi (N3050611), Hg (N3050634), Pb (N3050657), Cd (N3050615), Zn (N3050691), Sn (N3050675), Te (N3050680), Tl (N3050683), Ge (N3050630), Cs (N3050620), Rb (N3050664), P (N3050655)