The pre-dose technique is very useful for thermoluminescence dating of porcelain. It incorporates two characteristics in the porcelain dating

i.e. thermal activation and radiation quenching. Two methods

activation method and quenching method

for evaluation of paleodose were introduced. The results show that activation method and quenching method one suitable for dating of lower limit age (less than 100 years B.P.)and upper limit age (greater than 1000 years B.P.)

respectively. When both methods are co-used

the dating will be more accurate.