Boswellia serrata resin have been extensively studied for its therapeutic, cosmetic, pesticide activities. Its triterpenoic fraction mainly contains the class of so-called Boswellic acids, of which we offer a complete set of Boswellic standards. Since the ratio of these substances varies in the natural substances according to climates or varieties, Boswellic reference materials are useful to titrate the active fraction of extracts and to authenticate the origin of ingredients used in finished products.