The letdown heat exchanger reduces letdown fluid temperature to a value that is compatible with the ionexchangerresin.
下泄热交换器将流体的温度降到合适的定值，这个温度下，净化床工作允许。
2
A novel ionexchanger prepared from a strong anion resin modified with histidine was used for purifying crude hyaluronic acid to achieve a successful separation from protein and nucleic acids.