It requires a thermal cycler, filled with the DNA sample to be multiplied, thermostable Taq polymerase, primers with which we select what gets multiplied, and free nucleotides of all 4 types - A, T, C and G.

它需要往热循环仪中加入用于扩增的DNA样本、耐热的Taq聚合酶、扩增时选用的引物，以及所有4种类型的游离核苷酸A、T、C和G。