China Wuhan Desheng Biochemical Technology Co., Ltd Company News

  Why are EDTA K2 and EDTA K3 anticoagulants of choice in routine hematology？       In the routine blood testing, various medical institutions mostly use vascular additives and supporting equipment and instruments for analysis, more common additives are anticoagulant, coagulant promoting agent, serum separation glue, etc. In terms of market application, there are many types of anticoagulant products, such as EDTA K2 and EDTA K3, which are widely used. Why are these two reagents so popular? The following details for you to introduce.       What are EDTA K2 and EDTA K3?     EDTA K2 is a strong anticoagulant commonly used to store blood in blood collection tubes, which can stop blood clotting for a certain amount of time. Its mechanism is because of its chelation property, after full contact with blood in test tubes, it can achieve the purpose of trapping metal ions, thus reducing reactivity at the root and preventing blood clotting. Speaking of EDTA K3, in fact, it is another form of EDTA K2. Its performance and action mechanism are the same, that is, it has one more potassium ion than EDTA K2 in the number of ions.       Why are EDTA K2 and EDTA K3 commonly used anticoagulants?     The main reasons for the use of EDTA K2 and EDTA K3 as anticoagulants in routine blood tests are:     1. Both of them are anticoagulant by chelating potassium ions;     2, both play a role in preventing the blood stored in the tube from clotting, both can be achieved by chelating the calcium ions of the blood;     3, Both are approved by the International Blood Committee in vitro blood anticoagulants, suitable for common routine blood test analysis, thus complete blood count;       Use points when selecting EDTA K2 and EDTA K3     1. First of all, it is important to determine the blood collection volume and the dosage of EDTA K2 or EDTA K3. Usually, the blood collection volume is 2mL and the anticoagulant dosage is 20uL.     2. Since the produced EDTA K2 and EDTA K3 are in powder form, they need to be configured as solution. It should be noted that the storage condition of the solvent should be kept at 0-4℃ and the storage time should not exceed one week.     3. When using EDTA K2 or EDTA K3 anticoagulant tubes for blood collection, it should be noted that the anticoagulation of EDTA salt is not irreversible anticoagulation, and the detection should be completed within 24 hours after blood collection.     Desheng Biochem is the main supplier of vascular additives, producing a series of products, which can meet the public one-stop shopping needs. And product quality by professional R & D personnel layer by layer check, sampling and repeated testing, testing qualified, can be sold to countries. If you have related needs, please click on the website for details!

    Is the blood anticoagulant function of CAS25102-12-9 EDTA 2K continuous?       EDTA 2K, known as dipotassium ethylenediamine tetraacetic acid in Chinese, CAS No. 25102-12-9, is an important anticoagulant added to vacuum collection vessels, compared to other types of anticoagulants, such as: Heparin, sodium citrate, potassium oxalate, etc., are used more frequently, so here to give you a detailed introduction, to help you understand the details of it, to help use in clinical testing.       EDTA 2K Blood anticoagulant Time     As a widely used anticoagulant, EDTA 2K is sufficient to demonstrate its good anticoagulant effect and stable performance. However, it should be noted that its blood anticoagulant function is not continuous, which means its anticoagulant time is limited. Because EDTA is a non-irreversible anticoagulant, medical personnel usually complete the test within 24 hours after blood collection to avoid errors in test results.       Type of sampling vessel for EDTA 2K applications     The amount of anticoagulant added to different types of anticoagulant tubes varies. EDTA 2K is usually added to a vacuum tube used to test blood routine. The tube cap is purple. In addition, it can also be used in nucleic acid detection tubes. The main mechanism is that EDTA complexing magnesium ions, so that it will have an inhibitory effect on nucleases requiring the presence of magnesium ions to play a role, and can prevent nucleic acids from being degraded by nucleases.       The amount of EDTA 2K     The dosage of EDTA 2K in the collection vessel is determined by the amount of blood collected. The content of EDTA 2K per ml of blood ranges from 1.5 to 2.2mg. The median value of EdTA 2K is 1.8mg/ml when preparing reagents. It should be noted that the dosage of EDTA 2K is separate from the amount of heparin anticoagulant. The dosage of EDTA 2K is by weight and heparin is by titer. It should not be confused.       EDTA 2K solution preparation     EDTA 2K is white crystalline powder, which should be prepared into solution in the preparation of anticoagulant tube. The concentration of the solution should not be too low or too high. When increasing the dosage of EDTA 2K, the concentration should be increased first and then the spraying amount. The reason why the concentration should not be too high is that when the temperature drops, the solubility will also change, resulting in the precipitation of EDTA 2K crystals, sometimes causing the risk of hemolysis. Usually, 20 microliters of EDTA 2K solution is added to 2mL or 3mL of blood collection.       Desheng Biochemical focuses on the research, development, production and sales of vascular additives. As a source manufacturer, Desheng Biochemical is not only experienced, but also supervised and controlled by professionals. There is no middleman profit margin, and there is no inferior products. At present, the series of vascular collection products produced, such as serum separation glue, heparin sodium, heparin lithium, EDTA potassium salt, have been exported to overseas, many customers long-term buyback, praise constantly. If you have vascular reagent needs, welcome to click on the website consultation!

Why does the serum separating gel produce bubbles?       Nowadays, with the improvement and development of the medical industry, many hospitals or institutions do not only focus on quality, but also have high requirements for beauty. If there are bubbles in a perfect transparent gel, it will not only damage the external image, but also the purchaser will question whether the transparent gel has a quality problem? This will affect the purchase volume. So today we will carefully analyze the bubble problem of serum separating gel.      

As an in vitro blood anticoagulant, EDTA-3K is widely used in vacuum test tubes. With the promotion of blood routine projects, the demand for EDTA-3K will only increase, and the sales of EDTA-3K in the market are also very optimistic.At this time, the number of manufacturers producing EDTA-3K also involuntarily increased, such as Hubei New Desheng, Shandong Suihua, Jiangsu Haolong, Hubei Chengfeng, etc., among so many manufacturers, is there any one with excellent production quality?   The answer is definitely yes. Here I would like to recommend a manufacturer of ethylenediaminetetraacetic acid tripotassium salt with better quality in China - Hubei New Desheng. Its EDTA-3K has stable performance and good anticoagulant effect. It is quite popular in the domestic market. Why do you say that? Let me introduce it to you in detail. 1. We produce EDTA-3K with high purity As an in vitro anticoagulant, EDTA-3K not only has high requirements on key values, such as solubility, pH value, appearance, etc., but also must ensure a purity of over 99%, and Desheng has achieved this. The purity is even as high as 100.5%, mainly because Desheng produces dihydrate EDTA-3K, which has a more stable moisture absorption capacity than anhydrous EDTA-3K.   2. Desheng is a Chinese manufacturer Although there are many merchants selling EDTA-3K, few are genuine manufacturers. Many people will encounter middlemen. Not only the price is high, but the product quality has also become a headache. And Desheng is a real Chinese manufacturer that can be used for on-site inspections. Once there is a problem with the goods, it is guaranteed to be returned without worry, and the price is always given to the customer with the manufacturer's discount, and there is no situation of making a difference.   3. Guaranteed delivery time and sufficient goods As a wholesale manufacturer, it has a large warehouse and advanced production equipment, and its production capacity can basically reach the ton level or even higher. There is also stock in the warehouse, which guarantees delivery on the same day or the next day, and can fully satisfy customers with large orders. Especially for foreign customers, Desheng will also keep separate inventory, although the distance is far away, it is guaranteed that customers will not be out of stock.   Desheng has always believed in "quality first", so since its establishment in 2005, it has been concentrating on various products to ensure that the products are of high quality and can stand the test of the market.We’ve fully established a good cooperative relationship with customers by its own brand.If you also have the demand for EDTA-3K or other blood collection tube additives, you may wish to use Desheng as a key partener, and we won’t fail your trust!

Heparin sodium, as a commonly used additive in blood collection tubes, has the main feature of preventing coagulation after blood collection. Because of this, its status has gradually become "noble" in the field of medical testing. In addition, it can also be used as a drug for the prevention and treatment of thrombotic diseases, such as: cerebrovascular thrombosis, which can effectively avoid the formation and expansion of thrombus. From its anticoagulation function, it can be known that it is almost closely related to blood, so how does it affect blood and thus play a role? As an in vitro anticoagulant and anticoagulant drug, it mainly has a great interference effect on the blood coagulation process, and its effects are mainly in the following aspects: 1. First, control the composition of thrombin at the source, so that prothrombin is blocked, and the source of blood coagulation is blocked, so it can no longer promote the formation of thrombin. 2. When it is in a higher concentration, heparin will inhibit the effect of other coagulation factors of the same type, and promote the change of fibrinogen to fibrin. 3. When the above links are affected, the platelets can be prevented from aggregating and causing damage, and the coagulation function of the blood will fail, so naturally there will be no coagulation phenomenon, which is also the purpose to be achieved in the detection. Since the types of heparin sodium on the market are divided into crude heparin sodium and high-quality heparin sodium, as an additive in test tubes, it is necessary to ensure pure appearance, refined and purified high-quality heparin sodium, and the key index data can only be selected if it meets the standards. And in order to achieve a more ideal anticoagulant effect during use, the conventional dosage is 1mL of blood corresponding to 20IU of heparin sodium, remember not to use too much or add it in violation of regulations. Choosing a high-quality heparin sodium manufacturer is an issue that must be considered. As a Chinese blood collection tube additive manufacturer, Desheng has invested a lot of time and money in heparin research. Complete in accordance with all production procedures and production indicators to ensure that there is no problem with the quality of heparin. The heparin products produced today have been fully sold, can provide customers with first-class services, and have experience in cooperation with many overseas companies. If you have relevant needs, welcome to click the website to consult details!

Methods for the use of serum separation gel in blood collection tubes       At present, many large medical institutions will generally use anticoagulant tubes and procoagulant tubes in blood testing. Different additive test tubes have different test items and different uses. Now we want to focus on the serum separating gel in the blood collection tube. It can complete the blood separation on the original tube, reduce the operation process, and improve the detection efficiency. Therefore, it is favored by the market and its application is more and more extensive.       However, it should be noted that the serum separation gel has its own use method and requirements. If it is not done according to the method, it may lead to poor separation effect and inaccurate detection. The specific methods of use and points for attention are as follows for your reference:       1. Use the glue feeder to add the separating glue to the test tube. Pay attention to the glue amount during use. Generally, each test tube has specific requirements, about 0.8-1.2g;       2. Pay attention to the temperature conditions for the use of separating glue. It should not be too high or too low, and should be within 80 ℃ as far as possible. If it is cold winter, you can choose to use a water bath for heating during glue adding. The heating temperature should be controlled at 40-60 ℃, and the heating time should be uniform for the temperature of separating glue;       3. The test tube after glue addition needs to be put into the centrifuge for centrifugation, and the centrifugation time should be kept within 5 minutes. If the blood test is conducted, the centrifugation can be carried out on the machine after the blood is completely coagulated and the separation is successful, and the centrifugation time should be about 8-10 minutes.       4. If the test tube with separating gel has collected blood, the method of use is to place it in an environment with appropriate temperature, especially in winter, when the temperature is too low, the time for placing the sample should be appropriately delayed, otherwise the detection efficiency will be affected.       The serum separating gel in the blood collection tube has high requirements for use, and the requirements for the key indicators of its raw materials will also be more strict, otherwise it is easy to cause poor turnover or other situations that interfere with the experimental process due to improper use, so we must pay attention to the above use methods and precautions.       Desheng Biochemical is a Chinese manufacturer specializing in the production of additives for blood collection tubes. Founded in 2005, it has been independently researching and developing serum gel separators. Technicians check the level by level, regardless of experience or product quality, and adhere to winning the trust and support of customers with the best product quality. Now the cooperative customer group is growing to meet the export demand of the market. If you are interested in purchasing additives for blood collection vessels, please click the website or call for details!

How does EDTA tripotassium anticoagulant work   EDTA tripotassium is called EDTA-K3 for short. Because of its chelating effect of metal ions, it is often used as a chelating agent in various products, such as: softener, scale removal agent, antidote and so on. Among them, the most widely used field is in medicine, add to the blood collection tube, in clinical blood collection or test for blood sample pretreatment, play an in vitro anticoagulation effect. The anticoagulant effect of EDTA tripotassium anticoagulant is mainly related to its reaction principle, which is introduced to you in detail below.   EDTA tripotassium anticoagulant principle EDTA tripotassium has anticoagulant properties, after a certain amount of blood is drawn, in the process of full contact, it will directly complex the metal ions in the blood, blocking the clotting function from the source, so that the blood will not clot in a certain time, hindering the process of the experiment. In addition, EDTA tripotassium does not damage the blood cell components, has no effect on the number and size of white blood cells, and almost does not i nterfere with the red blood cell morphology. It is very suitable for routine blood testing. Its anticoagulant effect is considered to be one of the ideal anticoagulants.   EDTA tripotassium anticoagulant configuration Since the produced EDTA tripotassium is in powder form, when added to the test tube, it needs to be configured into a solution of a certain concentration, not directly added to the test tube. The usual configuration method is to use a certain amount of distilled water to dissolve EDTA tripotassium powder, need to ensure solubility, and then injected into the blood collection tube, the use of the dryer to dry it, the test tube material is different, liquid in the glass tube, plastic blood collection in the fog.     Precautions for EDTA Tripotassium Anticoagulation   The anticoagulation effect of EDTA tri potassium is non irreversible. In order to ensure the accuracy of the test results, it is required to complete the test within 24 hours. In addition, it should be noted that the anticoagulation effect of EDTA tri potassium is not suitable for all blood test items. As an anticoagulant, it is not suitable for blood coagulation test. Because of its ability to complexe metals, it cannot be used in calcium ion, potassium ion and other determination experiments.   Desheng Biochemical has been committed to the production of high-quality, high-performance EDTA series products, currently on sale of EDTA dipotassium, tripotassium, disodium, the purity of up to 99%. In addition, professionals strictly control the pH value, temperature and drying time of the solution in the production process. So far, customers have not reported any adverse situation. Companies for manufacturers direct sales, from the volume of price, welcome interested, click on the website or call consultation!

What are the advantages of Chinese manufacturer Desheng EDTA dipotassium?       With the development of the medical industry, potassium ethylenediaminetetraacetate plays an important role in clinical detection, and is one of the commonly used anticoagulants. The main anticoagulation mechanism is that potassium ethylenediaminetetraacetate can complex calcium ions in the blood to form stable chelates to prevent blood coagulation.     Desheng has developed and produced potassium ethylenediaminetetraacetate for more than 10 years, and the product quality is excellent, which is highly praised by customers. So why do customers choose Desheng? In fact, as a Chinese manufacturer, Desheng has the following advantages in producing potassium EDTA.       1、 Performance advantages       The potassium ethylenediaminetetraacetate produced by Desheng is dihydrate. Compared with anhydrous, its performance is more stable, and its moisture absorption capacity is weak. The main content of potassium is up to 99%, and its water solubility is good. It is used for anticoagulation of blood in blood collection vessels, without interference, and is conducive to the accuracy of the test results.       2、 Advantages of goods supply       Desheng is equipped with a professional R&D team and production team. The daily production of potassium ethylenediaminetetraacetate can reach tons. The production process and equipment are advanced, so there will be no shortage of goods. For customers, the company provides the advantage of enjoying trial samples.       3、 Packaging advantages       The conventional packaging of Desheng EDTA potassium is 500g/bottle, 25KG/barrel, plastic barrel. If it needs to be exported, it will be packaged by Tietong, which will be palletized to prevent problems. At the same time, as a manufacturer, it can also be packaged according to customer needs.       4、 Export advantages       Desheng is a professional manufacturer of potassium ethylenediaminetetraacetate. It has strong logistics capacity and rich export experience. Up to now, it has exported to more than 100 countries, and has established long-term cooperation with it.       5、 After sales advantages       In addition to product quality and supply capacity, the most important part is service. Due to the similar functions of many products, sometimes there are quality problems caused by customers' inability to use or improper storage during the use process, which need to be answered by personnel, so professional after sales teams are required to escort. In this regard, Desheng has provided perfect after-sales training services to protect the rights and interests of customers. If customers have problems, they can provide solutions at the first time.       Since its establishment, Desheng Biochemical has incomparable advantages not only in the production of potassium EDTA, but also in the production of other types of products. Today, the series of products produced and sold include biological buffer, blood collection vessel additives, chromogenic substrate and luminescent substrate, which can meet your different purchase needs. If you are interested in purchasing, you can click the website to consult!

  What is the performance index of serum separating gel?   With the rapid development of medical automation, the reagent that will be frequently used in immunology, hematology and clinical testing is serum gel, which can effectively separate serum, obtain samples, improve testing efficiency and ensure the accuracy of results. There are many manufacturers producing serum separating gel in the market, with different raw materials and performance index requirements for each manufacturer, and the quality of the final product has its own advantages and disadvantages. What are the performance indicators of serum separating gel? What are the specific requirements?   1、 Specific gravity   The specific gravity of serum separating gel should be located between serum and blood cells to isolate and form a barrier. Generally, the specific gravity of whole blood is 1.050-1.060, the specific gravity of red blood cells is 1.080-1.090, and the specific gravity of plasma is 1.025-1.030. The specific gravity of serum separating gel is required to be 1.045-1.065, just between serum and blood cells, which can effectively extract high-quality serum samples.   2、 Viscosity   The viscosity value of serum separating gel is between 100000 and 200000 li poise. The performance index requirements based on this have a certain impact on the gel adding process and fluidity, and are also important indicators to measure the quality of serum separating gel.   3、 Physiological inertia   The serum separating gel is required to be physiologically inert and made of hydrophobic material. It will not react during the process of direct contact with blood in the test tube, and will not affect the blood composition, so as to avoid inaccurate results and the occurrence of wrong judgment by medical personnel. 4、 Irradiation resistance   The vacuum blood collection tube is sterile for blood testing, which usually requires sterilization. It is required that the performance of the serum separating gel will not change after irradiation sterilization, and it is not easy to age, which will affect the experimental process.   5、 Stability   The stability requirements are mainly in two aspects. One is that the separation gel can ensure that it will not deteriorate within the validity period and has stable performance in the process of placement or transportation. The other is that the serum separation gel test tube, when added with other reagents at the same time, has compatibility and will not affect the detection due to the effect of other reagents.   Desheng is the first one among many enterprises to research and develop serum separating gel. After four generations of research and development, its performance is stable. Its key indicators can also be customized according to your requirements. The product quality is widely recognized by customers. A large number of products are sold in stock, which can fully meet your needs. Welcome interested parties to click the website for details!

What are the types of vacuum blood collection gel?   When talking about serum separating gel, many people first think of its application in the vacuum blood collection tube. As an additive, it can separate serum and blood cells, so as to obtain high-quality serum samples and ensure the stability in transportation and storage. However, because they are prepared from chemical materials, the types of separation gel produced from different materials are different. What are the specific types in the market? Here's a detailed introduction.   1、 Silicone rubber system separator   The main part is silicone rubber, which is the first type of separating gel to be put into the market in the early stage, and is also commonly known as the "first generation separating gel". Its production process is unstable, which is prone to overturn, and its thixotropy, viscosity and hydrolysis resistance are at an immature stage, so it will not be used at present.   2、 Acrylic acid system separator   Its composition is mainly polyacrylate. After the improvement of the previous generation, this separation adhesive is hydrophobic and does not absorb water. Its turnover performance and thixotropy have been improved, and it is popular in the market. In addition, it has strong stability in direct contact with blood in a vacuum test tube, will not be easily oxidized, and is widely used.   3、 Resin system separator   The composition is mainly straight chain alkane resin. This separating gel has been further improved. It has better physiological inertia, is not easy to age, and is radiation resistant. Even if it is sterilized in the test tube, it will not have an impact. At the same time, it is compatible with other reagents. Sometimes, it can work together with anticoagulants to obtain more accurate results. Compared with the first two types, the production cost of this separation gel is also higher, and it is usually used for export or enterprises with higher requirements for quality.   4、 PRP separator   PRP is high concentration platelet rich plasma, and the role of PRP gel separator is to use PRP centrifuge to quickly separate blood, obtain high-quality platelet rich plasma, and then inject it into the part needed by the human body, playing the role of beauty repair or skin regeneration. This PRP gel is hydrophobic material, which can be separated and extracted in the original state of blood. Compared with traditional extraction methods, PRP gel not only simplifies the extraction process, but also improves the efficiency.   Desheng Biochemical is a professional manufacturer of serum separating adhesives in China. Its main types are resin type separating adhesives, acrylic acid system separating adhesives and PRP separating adhesives. Its performance is stable, its specific gravity is accurate, it is not easy to cause aging and turnover, and it has the function of anti irradiation, which can be effectively used in various blood tests. If you have relevant needs, please click the website for consultation!

What are the brands of serum separating gel?      Speaking of serum separating gel, it is mainly used as an additive in vacuum test tubes, and is favored by various medical institutions for blood detection and analysis. In fact, in the early days, the production and research and development of blood collection reagent enterprises in China was relatively slow due to the limitation of raw material technology. However, in recent years, due to the continuous breakthroughs and innovations of domestic raw material factories, medicine has entered the era of full automation, especially the popularity of serum gel separators, which can fully meet the needs at home and abroad, but it also means that there are more manufacturers of gel separators. At this time, the brand selection is good or bad, It determines the use effect.      There are many brands of serum separating gel in China, including Desheng, Jie'an and Huzheng. Which one is better with so many brands? You can analyze more about the advantages and choose a brand that suits you. Here, we will focus on recommending a brand - Desheng, which occupies a seat in the market and is very popular. Why do you say that? Now, let's introduce it to you in detail.       1、 Desheng brand     Desheng, fully known as Hubei New Desheng Material Technology Co., Ltd., has been committed to the research, development and production of blood collection additives since 2005, providing raw material support, professional solutions and high-quality services for many diagnostic reagent enterprises at home and abroad. Among them, the serum separating gel products have undergone four generations of research, development and improvement. From the beginning, it is not radiation resistant and easy to age, to the end, it is radiation resistant, hydrolysis resistant, not easy to age, and suitable for long-term blood preservation. The serum separating gel of Desheng brand has been recognized by more than 100 well-known enterprises and sold overseas.       2、 Advantages of Desheng serum separating gel       1. Desheng separation gel has good thixotropy and physiological inertia, and does not react with other added substances in the test tube, causing interference.       2. After 4 generations of improvement, they all have anti irradiation function, and even after sterilization, the products remain unchanged.       3. Stable performance, it can preserve the integrity of blood cells for a long time without damaging them.       4. Precise specific gravity, located between blood clots and serum, can accurately separate and extract high-quality serum.       5. The serum separating gel of Desheng brand has obtained the national patent of China, and its process is stable, the ingredients are safe, and the use is efficient and convenient.       In addition, according to the different needs of customers, Desheng can meet the customization of separation gel indicators. As a production enterprise, there are a large number of spot stocks in the warehouse, which can be directly supplied. If problems occur, professionals will provide solutions for you. With 18 years of efforts, the serum separating gel of Desheng brand has developed steadily and is favored by the market. If you have relevant needs, please click the website for consultation!

What is the purity testing method of EDTA Tripotassium?       Tripotassium ethylenediaminetetraacetate is called EDTA-3K for short. Because of its anticoagulant performance, it is often used as an anticoagulant in blood collection vessels, and is favored by some reagent manufacturers. But at the same time, due to the expansion of demand, there are more and more manufacturers producing tri potassium EDTA, the quality becomes uneven, and many low-quality products are also included.       What are the representative characteristics of "inferior" products? The main problems are unstable performance, low purity and appearance defects. How to identify these "inferior" products? In fact, PH value, clarity, solubility, purity and impurities are the key factors that determine the performance of EDTA. Special attention should be paid to these indicators, which can be detected if necessary, so as to avoid buying inferior products with poor performance. So, what is the purity detection method of EDTA? Next, I would like to give you a detailed introduction.       1. Purity test       The detection method of tri potassium ethylenediaminetetraacetate is the same as that of di potassium ethylenediaminetetraacetate. The main method is to weigh 0.1g tri potassium ethylenediaminetetraacetate sample, which can be accurate to 0.0001g under special circumstances. Add 70mL of water and 10mL of ammonia ammonium chloride buffer solution with pH value of about 10. After the sample is fully dissolved, add 5 drops of chrome black T indicator, 5g/L, and titrate with zinc chloride standard titration solution until the solution turns red purple [c (ZnCL2)=0.025mol/L].       2. PH value detection       Weigh 5g of test EDTA potassium sample, dissolve it in 100ml of pure water, stir for about 5min at room temperature, and test the PH value. The pH value of Desheng's EDTA potassium is 7.3 ± 1 (5% aqueous solution, g/ml).       3. Clarity test       Weigh 20g of EDTA tri potassium test sample, dissolve it in 100ml of pure water solution, stir for 5-10 minutes at room temperature, and compare the prepared solution with colorless transparent liquid to see if it is clear.       4. Solubility test       Weigh 60.0g of EDTA tri potassium sample to be tested, dissolve it in 100ml pure water, stir for 5-10 minutes at 25 ℃ at room temperature, carefully observe the dissolution, and see if the water solubility is greater than or equal to 60%.       5. Impurity detection       Place 0.22 filter membrane in the detection apparatus, pour the EDTA tripotassium solution into the filter, and observe whether there are impurities or excessive impurities on the filter membrane. If there are many impurities, it is recommended not to use it.       The above five detection methods are used to judge whether the quality of EDTA tripotassium is up to the standard. The key is the purity, which is up to 99% or more, and will not affect the detection experiment, so you can add it into the test tube with confidence.           Desheng Biochemical has been committed to developing the research, development, production and sales of additives for blood collection vessels. As one of the main products, tri potassium ethylenediaminetetraacetate is not only of high purity, but also indicators in all aspects are formulated by R&D personnel according to the testing standards, with strict requirements and precise control. If you have the demand for EDTA, please click the website for consultation and purchase!