Dry information sharing | How much do you know about purification columns?

Each kit contains a key component - the purification column, which is also the key to determining the quality of the product. So how much do you know about it? Do you know how it works? Compared with other extraction methods, what are the unique advantages of the spin column method?

The purification column consists of a centrifuge tube, a preparation tube, a pressure ring, and a silica gel membrane. The silica gel membrane in the middle plays a key role. The silica gel membrane can selectively adsorb nucleic acids, and this process is reversible.

01 Compare organic methods

Compared with the organic method, the spin column method is more convenient and efficient. Purification can usually be completed within 20-30 minutes, and the product yield is higher. More importantly, the optimized buffer and adsorption membrane make the spin column method suitable for a variety of sample types, such as blood, culture fluid, plants, swabs, viruses and bacteria, etc. It can also purify specific types of nucleic acids such as plasmids, mRNA, MicroRNA, etc. for specific applications.

02 Comparative magnetic bead method

Compared with the magnetic bead method, the spin column method has more flexible throughput and does not require supporting equipment, making high-quality nucleic acid purification cost-effective and accessible to every molecular biology laboratory.

The purification column is a vital component of the spin column method and plays a key role in the nucleic acid extraction and purification process. By understanding the working principle of purification columns and the unique advantages of spin column methods over other methods, we can better utilize this technology to ensure the high quality of laboratory products and promote the continuous progress of scientific research.

Design and Optimization

• The wall thickness is uniform, and the tube will not burst during high-speed centrifugation, which is safe and reliable;
• it can withstand high-speed centrifugation, and the maximum centrifugal force can reach 24,000xg;
• high-precision mold production, no surface coating, will not contaminate the sample;
• it can be easily opened and closed with one hand, and the seal is tight;
• it can be equipped with high-quality glass fiber membranes, with high extraction yield, stable performance, and good repeatability. It is suitable for various experimental operations such as PCR, enzyme digestion, sequencing, hybridization, etc.