An analytical technique used to measure the concentrations of elements in a sample. The system is incredibly sensitive and can detect down to micrograms (?g) . It is performed by focusing a beam of known wavelength of ultraviolet (UV) light through a flame and into a detector. - Three lamp flame method. With automatic safety protection function, anti temperingautomatic gas path protection, acetylene gas leak- age alarm, automatic shutdown system, abnormal automatic power-off.