The Automatic Solid Phase Extractor is manufactured by Youxingkeyi. It has some features: Number of samples processed continuously: 30 Unique syringe pump design can accurately control the flow rate: 0-20ml / min Available SPE columns: 1, 3, 6ml Standard configuration can use 4 kinds of pretreatment solvents, and can expand more solvent channels according to customer needs Multi-step SPE column activation and eluent using forward hydraulic technology to ensure the repeatability of sample processing The inside and outside cleaning technology of the injection needle to ensure no cross-contamination during sample processing With over-pressure protection function, the pressure is too high, and the machine will stop automatically. Number of channels: 1, 3 Software operation is simple and convenient, full Chinese interface