EDTA potassium usage concentration

Release time:

2024-01-23


EDTA-K2 is a commonly used chelating agent widely used in the fields of biochemistry, analytical chemistry, and medicine. Its main function is to chelate metal ions, thereby preventing them from reacting with other components in the sample and maintaining the stability of the sample. Meanwhile, EDTA dipotassium can also eliminate the interference of metal ions on analytical methods, improving the accuracy and reliability of analysis. In the laboratory, the correct concentration is one of the key factors to ensure the effective chelation of EDTA-K2.

EDTA dipotassium powder

Common concentrations of EDTA dipotassium

The concentration of EDTA dipotassium depends on specific experimental conditions and application scenarios. Generally speaking, the concentration range of EDTA dipotassium is between 0.01-100mmol/L. In biomedical research, the concentration of EDTA dipotassium is usually between 1-10mmol/L, used for anticoagulation, stabilizing metal ions in biological samples, etc.

In chemical analysis, the concentration of EDTA dipotassium can be selected according to different analytical methods. For example, in the complexometric titration method, the concentration of EDTA dipotassium is usually between 0.01 and 0.1mol/L; In spectrophotometry, the concentration of EDTA dipotassium can be adjusted as needed, but generally should not exceed 1mol/L.

Principles for selecting the concentration of EDTA dipotassium

Choosing the appropriate concentration of EDTA dipotassium is the key to ensuring the accuracy and reliability of experimental results. Here are some principles for selecting the concentration of EDTA dipotassium:

1. Select an appropriate concentration range based on the experimental purpose and requirements, such as in biomedical research, selecting a concentration that can stabilize metal ions in biological samples; In chemical analysis, it is necessary to select a concentration that meets the requirements of the analysis method.

2. Choose an appropriate concentration based on the properties and composition of the sample, and for samples containing a large amount of metal ions, choose a higher concentration of EDTA dipotassium to fully chelate the metal ions; For samples containing fewer metal ions, choose a lower concentration to reduce interference.

3. Choose an appropriate concentration based on experimental conditions and environment. For example, under high temperature or pH conditions, it is necessary to choose a stable concentration of EDTA dipotassium. Under low temperature or pH conditions, a lower concentration can be chosen to reduce interference.

4. Select the appropriate concentration based on the sensitivity of the analysis method. For analysis methods with high sensitivity, a lower concentration of EDTA dipotassium can be chosen to reduce interference. If the analysis method has poor selectivity, a higher concentration can be chosen to improve accuracy.

5. Choose the appropriate concentration according to the experimental operation and steps. For example, in complexometric titration, it is necessary to select the concentration of EDTA dipotassium that can meet the titration requirements; In spectrophotometry, it is necessary to select the appropriate concentration based on factors such as absorbance range and standard curve slope.

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Recommended concentrations of EDTA dipotassium under different experimental conditions

1. Metal ion chelation: In applications that prevent the influence of metal ions on experiments, lower concentrations of EDTA dipotassium are usually used. The recommended concentration range is generally between 1 mM and 10 mM, depending on the required metal ion concentration for the experiment.

2. Cell culture: In cell culture, EDTA dipotassium is used as a cell dissociating agent to dissociate cells for subculture or passaging, with typical concentrations ranging from 0.01% to 0.1% (w/v).

3. Anticoagulant preparation: EDTA dipotassium used to prepare anticoagulants typically requires a high concentration, typically between 100 mM and 200 mM. This concentration is sufficient to inhibit the activity of coagulation factors in the blood, ensuring that the collected blood samples remain liquid for a certain period of time.

4. Analytical titration: In titration experiments in analytical chemistry, the recommended concentration of EDTA dipotassium is usually between 0.01 M and 0.1 M to ensure sufficient coordination with the target metal ion.

As a multifunctional chelating agent, the correct concentration of EDTA dipotassium is one of the important factors to ensure the success of the experiment. When using EDTA dipotassium, researchers should choose an appropriate concentration based on experimental requirements and specific conditions, while paying attention to adjusting the pH value of the solution. As a manufacturer of EDTA dipotassium additive for blood collection, Desheng can provide high-quality raw materials for customers to prepare solutions and spray them in test tubes as anticoagulants. The concentration can be adjusted by customers themselves, making it convenient, fast, and easy to use. If you are also interested in purchasing, please feel free to contact us at any time!