Deuterium Arc Lamp to fit the M508, M501 and M550.                               Part No. 550-516
Deuterium Arc Lamp to fit the M501 with Serial No.<0707098                 Part No. 550-506
Deuterium Arc Lamp to fit the M302, M330 and M350.                               Part No. 350R-18316

CamSpec spectrophotometer deuterium arc lamps