Sunjay Technologies Pvt. Ltd. Offers Hollow Cathode Lamps for Atomic Absorption Spectrophotometers. Sunjay Technologies Pvt. Ltd. Offers various types instruments for research and analytical industries; biotech and pharmaceutical industries. The Hollow Cathode Lamps for Atomic Absorption Spectrophotometers are used to suit Varian coded instruments, and lamps to suit Perkin-Elmer Coded Instruments.