In order to complete a quick authenticity testing for the Tang Dynasty Tri- coloured Pottery

a method for preparation of disc samples is developed.About 50 mg fine grain of scraps taken from some obscure position of the tested pottery was divided into 15 pents.some of them was exposed to artificial β- radiation and the natural glow curve was compared with the artificial one

the sample could be dated both rapidly and accurately. Five pieces of the pottery were dated with this method

and one of them was found to be a sham.