The ring magnetic stand, as a vital separation tool in the laboratory, plays an indispensable role in a wide range of scientific research fields with its unique design and working principle. The device usually cleverly integrates one or more ring magnets on a bracket or base to carefully construct a closed or open magnetic field environment. This design ensures uniform distribution and high stability of the magnetic field, thereby efficiently attracting and firmly holding magnetic particles or beads.

1. Working principle of ring magnetic stand 1. Magnetic field generation (1) Permanent magnet material: Ring magnetic stand usually uses permanent magnets made of hard magnetic materials, such as iron, nickel, cobalt or rare earth metals and their alloys. These materials are able to maintain stable residual magnetization and generate magnetic fields over a long period of time without the need for additional excitation power. (2) Magnetization method: The magnetization method of ring magnets is usually radial magnetization, that is, the magnetic field lines are distributed annularly from the inner circumference to the outside. There are also some ring magnets that are axially magnetized, and the magnetic flux lines circulate outward from the upper and lower ends. 2. Magnetic field characteristics (1) Closed magnetic circuit: Ring magnets are distributed in a closed loop around the central contour. The magnetic circuit is closed, has no clear magnetic poles, and the magnetic field is symmetrically distributed. This characteristic makes the magnetic field generated by the ring magnet stable and symmetrical. (2) High magnetic induction intensity: Due to the closed magnetic circuit, the magnetic induction intensity of the ring-shaped magnetic frame is high, which can effectively attract and fix magnetic particles. 3. Particle separation (1) Magnetic attraction: When a suspension containing magnetic particles is placed on a ring-shaped magnetic stand, the magnetic particles will be attracted to the orifice plate of the magnetic stand under the action of the magnetic field. This is because the atoms or molecules inside the magnetic particles are rearranged by the magnetic field to form magnetic dipoles, which are consistent with the direction of the magnetic field. (2) Particle fixation: The magnetic particles attracted to the well plate are firmly fixed under the action of the magnetic field, thereby achieving separation from the suspension. 4. Subsequent processing (1) Washing and rinsing: The separated magnetic particles can be further processed through washing, rinsing or other elution processes to remove impurities and residues attached to the surface of the particles. (2) Purification and analysis: The washed and rinsed magnetic particles can be used for subsequent purification or analysis operations, such as DNA and RNA extraction and purification, protein separation and purification, etc.

2. Product features of the ring magnetic stand 1. Efficient separation: The ring magnetic stand can quickly and effectively separate magnetic particles from the suspension, improving experimental efficiency. 2. Stable and reliable: Its built-in ring magnet has stable residual magnetization and can generate a stable magnetic field for a long time, ensuring the reliability of experimental results. 3. Strong compatibility: Ring magnetic stands are usually compatible with a variety of experimental vessels and magnetic bead products, providing users with more choices. 4. Easy to operate: The design is user-friendly, allowing experimenters to get started easily and quickly complete the sorting task.

3. Application fields of ring magnetic stand 1. Molecular biology: In the process of DNA and RNA extraction and purification, the ring magnetic stand can efficiently separate and purify magnetically labeled nucleic acid molecules. 2. Protein engineering: In protein separation and purification, the circular magnetic stand can be used to capture and separate magnetically labeled proteins to improve protein purity and recovery rate. 3. Cell biology: In experiments such as cell sorting and co-immunoprecipitation, the circular magnetic stand can be used to quickly separate specific types of cells or protein complexes. 4. Medical diagnosis: In the medical field, ring magnetic racks can be used to isolate specific pathogens, tumor markers, etc. from complex biological samples, providing support for early diagnosis and treatment of diseases.

Today, with the rapid development of scientific research and biotechnology, the ring magnetic stand has become an indispensable and important tool in the laboratory with its unique magnetic separation technology. This carefully designed equipment, with its efficient, stable and flexible performance characteristics, is widely used in many fields such as molecular biology, cell biology, medical diagnosis, food testing and forensic identification, providing powerful tools for scientific researchers. support.