Our HC Lamp can be used on Atomic Absorption Spectrometers manufactured by Perkin-Elmer, Varian, GBC, Hitachi, Shimadzu, Thermal Jarrel Ash Unicom, LEEMAN Labs, Phillips Our HC Lamp are specially designed to emit high intensity at the recommended operating currrent, resulting in low Signal-to-Noise ratio and excellent performance. We monitor, control and inspect every single step of the hollow cathode lamp manufacturing process. The materials are carefully ed in our manufacturing to avoid spectral interference fill gas or impurities in the cathode material.