Ready to use dialysis bag 10-5000D CE membrane

Product Name:Ready to use dialysis bag 10-5000D CE membrane

Diameter:6.4mm

capacity0.32mL/cm

Specifications:0.5m,1mWait.

Processing method:

1.Check packaging: Check if the packaging of the dialysis bag is intact, whether there is any damage, leakage, or other issues. If there is a problem with the packaging, it may affect the performance of the dialysis bag and even lead to experimental failure, requiring the replacement of a new dialysis bag.

2.Remove dialysis bag: Open the packaging, carefully remove the dialysis bag, and be careful not to damage the dialysis bag.

3.Balance buffer: Soak the dialysis bag in an appropriate amount of dialysis buffer for a period of time to balance, usually15 - 30minute. This step is to adapt the dialysis bag to the buffer environment used in the experiment, ensuring the stability of the subsequent dialysis process. During the soaking process, gently stir or shake the dialysis bag to ensure full contact with the buffer solution.

4.Cleaning dialysis bag: Gently rinse the inner and outer surfaces of the dialysis bag with buffer solution or deionized water to remove any residual protective agents or impurities. Gently operate during flushing to prevent the dialysis bag from rupturing.

5.Check the integrity of the dialysis bag: Fill the dialysis bag with water or buffer solution and observe for any water leakage. It can also be soaked in water to check for any bubbles emerging, in order to determine if the dialysis bag is damaged. If the dialysis bag is found to be damaged, it should be discarded and replaced with a new dialysis bag.

6.Preparation for sample loading: The processed dialysis bag can be used to load the sample to be dialyzed. When loading samples, be careful not to exceed the capacity limit of the dialysis bag, which is usually the volume of the dialysis bag1/2Go to2/3Then seal the dialysis bag.

Ready to use dialysis bag 10-5000D CE membraneWorking Principle:

Characteristics of semi permeable membrane: Dialysis bag is a type of film with semi permeability, usually made of cellulose or other polymer materials. This semi permeable membrane has a certain size of pore size, which forms a selective barrier.

Molecular diffusion: When a biological sample solution containing multiple solutes is placed in a dialysis bag and the dialysis bag is placed in a specific buffer solution, due to the concentration difference between the inside and outside of the membrane, small molecule substances (such as salt ions, small molecule metabolites, etc.) will move from the high concentration area (inside the dialysis bag) to the low concentration area (buffer solution outside the dialysis bag) according to the diffusion principle, while large molecule substances (such as proteins, nucleic acids, etc.) cannot pass through the semi permeable membrane due to their larger size than the pore size of the dialysis bag, and are retained in the dialysis bag. After a period of time, the small molecule substances in the dialysis bag gradually decrease, eventually reaching a dynamic equilibrium of the concentration of small molecule substances inside and outside the membrane, while the large molecule substances are concentrated or purified, thus achieving the separation and purification of molecules of different sizes in biological samples.

Ready to use dialysis bags have a wide range of applications in multiple fields, and the following are some of the main application areas:

1.Biochemistry and Molecular Biology

Protein purification: used to remove salt ions, small molecule impurities, or denaturing agents from protein solutions to obtain pure protein samples for subsequent structural analysis, functional research, and other experiments. For example, before protein crystallization experiments, it is necessary to use dialysis bags to purify the protein solution and replace the buffer to meet the crystallization conditions.

Nucleic acid separation and purification: It can be used to remove small molecule impurities such as salt and primer dimers from nucleic acid samples, improve the purity of nucleic acids, and is commonly used in genetic engineeringPCRIn experiments such as product purification. For example, duringDNABefore sequencing, dialysis bags are usually used forPCRPurification of amplified products to avoid interference from impurities on sequencing results.

Buffer replacement: Replace the buffer solution in which biomolecules are located with a buffer solution suitable for subsequent experimental requirements. For example, the activity determination of certain enzymes requires a specific buffer system, and the enzyme solution can be replaced from the original buffer to the target buffer through a dialysis bag.

2.pharmaceutical industry

Drug development: In the process of drug development, it is used for the preparation of drug carriers and drug release research. For example, when preparing drug carriers such as liposomes, unencapsulated drugs or impurities can be removed through dialysis bags to improve the quality and stability of the drug carrier. At the same time, using dialysis bags to simulate the internal environment, the release rate and pattern of drugs under different conditions are studied, providing a basis for the design and optimization of drug formulations.

3.Biopharmaceuticals: Used in the production of biopharmaceuticals for the separation and purification of biological products, such as antibodies, vaccines, etc. Dialysis can remove impurities such as culture medium components and metabolites from fermentation broth, improve the purity and quality of biological products, and meet the quality management standards for drug production（GMP）The requirements.