Main points of operation of vacuum solid phase extraction device 1. Configure a liquid collection device between the vacuum source and the device chamber. Connect the vacuum source, liquid collection device and solid phase extraction device in sequence with a sturdy vacuum tube. 2. When using vacuum, do not allow the vacuum to exceed 25 â€Hg. 3. Adjust the vacuum by: A. Purge valve-can control the flow rate of the device system. (When the purge valve is connected to the vacuum gauge connection hole and the vacuum When the holes in the rod are aligned, the vacuum in the device will be released.) B. Sealing plug-Adjustable flow rate of CLEAN SCREEN®, CLEAN-UP®, XtrackT® and other SPE columns. 4. Remove under vacuum. Before the SPE column, make sure that the sealing plug is closed. If the device system is not completely deflated, it will cause the splash or overflow of the eluent and be damaged. 5. Disassemble the vacuum gauge and valve regularly to clean and lubricate each part .
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