A spectrophotometric method for determination of beryllium inμg quantities is described which is based on color reaction between beryllium and rufigallol having maximum absorption at 530 nm. Comparing various solvents, the suitable medium found is DMSO-H2O (3 ∶ 2). Interference of Al, Zr, Th, Hf and many other cations have been removed by solvent extraction of their oxinates with chlorofo