The acid purifier uses the principle of thermal radiation to keep the liquid temperature below the boiling point to evaporate, and then condenses the acid vapor to prepare high purity water and high purity reagents, which is widely used in sample treatment and analysis experiments. Product Features: 1. It can meet the very low detection limit requirements of ICP and ICP-MS and provide laborator-grade ultra-pure acid for harsh analytical applications. The containers used are all made of Teflon corrosion-resistant non-adsorption plastics, which can deal with common laboratory acids such as HNO3, HCl and HF. 2. The experiment proves that the metal impurity content of about 10ppb acid can be reduced to about 0.01ppb after one distillation. If more acid is required, the number of purification can be increased.