In order to meet the extremely low detection limit requirements of ICP and ICP-MS, a laboratory-grade ultra-pure acid distillation device is provided. The device is heated by a pressure regulator to keep the acid in a sub-boiling state, and then the acid vapor is cooled to prepare ultra-pure acid. .

      The containers used in this device are all made of F4 (polytetrafluoroethylene) and F46 (polyperfluoroethylene propylene) corrosion-resistant high-purity fluoroplastics, so it can handle nitric acid, hydrochloric acid, hydrofluoric acid and other common acids in laboratories without alteration. , and this characteristic is not possessed by quartz sub-boiling stills.

      Experiments have shown that most of the acid purification with a metal impurity content of about 10PPB can reduce the metal impurity content to about 1PPB or even lower after one distillation. If the acid requirements are higher, the number of purifications can be increased. The normal acid purification amount can reach more than 30ml/hour.

      Accessories include: FEP narrow-mouth bottle, pressure regulator, F4 connector, heating jacket, plastic pool, inlet and outlet pipes.

Features of high-purity fluoroplastic sub-boiling distiller:

      The sub-boiling distiller is a fluoroplastic instrument for preparing high-purity reagents and high-purity water. It has advanced technology, reasonable structure, simple installation, convenient operation and easy maintenance. Sub-boiling distillation uses the heat radiation principle of the heating jacket to keep the liquid temperature lower than the boiling point temperature to evaporate and condense to prepare high-purity water and high-purity reagents. Although the quartz sub-boiling distilled water device avoids the pollution of glass impurities, it is expensive and easy to break. Some strong acids have limitations; ion-exchanged water brings interference from organic substances due to the dissolution of organic substances; and the fluoroplastic sub-boiling distiller of our factory will not entrain water droplets in the vapor due to boiling, that is, the gas-liquid separation is complete, so the water quality Very high. Because it can greatly reduce the blank value, it is an indispensable supporting instrument for the determination of trace elements and trace organics (atomic absorption spectroscopy, gas chromatography, isotopes, inductance and plasma emission spectroscopy, etc.).