Pneumatic pump (pneumatic pump) Pneumatic piston driven by gas as a high-pressure pump. Pneumatic pumps provide pulse-free, stable flow for chromatographic systems. Pneumatic amplification with pneumatic amplification pump can quickly obtain the required high outlet pressure and provide a large output flow, especially for homogenization method to fill the column. The disadvantage of the pneumatic pump is that the cylinder is bulky and inconvenient to change the mobile phase, and gradient elution can not be achieved without using two such pumps.
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