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  • The basic instrument used vacuum of Medicinal Chemistry
    The basic instrument used vacuum of Medicinal Chemistry 一. Overview Vacuum pump is one of the most commonly used laboratory equipment, often used to require a higher degree of vacuum occasions. Vacuum pump performance is good or bad depends on the structure and oil (oil vapor pressure ...

  • Evacuating the refrigeration system operating methods
    Evacuating the refrigeration system operating methods In the air conditioner vacuum operation, split type vacuum operation relative to the overall air conditioner (window unit), it is simpler. Because there are two shut-off valves on the split air conditioner outdoor unit on low or high p...

  • Advantages of liquid ring vacuum pumps in ketene Aroduction
    Advantages of liquid ring vacuum pumps in ketene Aroduction Ketene production application liquid ring vacuum pump gas transportation at least has the following advantages: First, liquid ring pumps for continuous long-term operation, thanks to a circulating medium transformer oil, transfo...

  • Updating and development of coal industry vacuum requirements
    Updating and development of coal industry vacuum requirements General adsorbed on coal bed methane, to go through the drainage, blood pressure, gas three production processes. Application of vacuum mines from the Soviet Union's SZ series, to our self-developed SK series, to today dominate 2...