The application of atom absorption spectrum apparatus to material analysis of metal, powder, liquid and chemical reagent in Battery's industry's material is introduced in this paper.

This apparatus is a multifunction spectrum testing set-up, which suits to measure for infrared detectors the wide range spectral sensitivity and also the distribution of spectral energy.

Single-beam surface photovoltage spectrum (SPS) apparatus can not avoid the error caused by the drift of light source intensity with time .