The separatory funnel speed-regulating oscillator is the latest product newly developed and developed. Its operation is safe and simple. The stepless speed regulation is also stable. It is a scientific research, teaching and production department of plants, biological products, genetics, viruses, medicine, environmental protection, etc. Indispensable laboratory equipment. The workbench is equipped with a special fixture, which can clamp a variety of test bottles under the same conditions and shake evenly. Particularly suitable for the preparation of biological samples for a variety of comparative tests