... more. Product Description: High-purity fluorine plastic sub-boiling distillation device: n order to meet the ICP, ICP-MS needs a ... limit of laboratory-scale ultra-pure acid distillation unit, the device uses voltage regulator heat, so keep sub-boiling acid, and ... cooling Preparation of ultra-pure acid, the principle of . The device used in containers are used F4 (polytetrafluoroethylene) and F46 (poly ...