Tungsten Lamp Back Catalog number: 11-3343 Manufacturer: SCIENCIX Availability: 3 weeks Price on request - + Recommended CTS-8068 Quartz Lens Price on request 11-3321 Wash Seal Gasket, 6/pk Price on request CTS-6809 Mobile Phase Transfer Line, TFE, 3/16" OD x 1/8" I Price on request