China Wuhan Desheng Biochemical Technology Co., Ltd Company News

As the main raw material often used in blood collection tubes for separating serum and blood clots,serum separation gel has to be mentioned. It has good inert properties and can separate serum and blood clots with adjustment of specific gravity. Although serum separation gel has not been used for a long time, the scope of usage is gradually expanding.   Desheng Biochemical is an early enterprise in China in the research and development of serum separation gels, and has been committed to a series of research and development and production of blood collection tube additives. So far, it has developed serum separation gels, heparin lithium, heparin sodium, EDTA K2, EDTA K3, sodium citrate, sodium fluoride, potassium oxalate, disodium EDTA, blood coagulant, blood coagulation powder, etc. They are highly praised by customers for both quality and service.   Serum Separation Gel is the first product developed and produced by Desheng Biochemical. Up to now, the daily output is stable at about 2-3t.After four generations of research and development of serum separation gel, whether it is appearance or whole system, our serum separation gel can be better adapt to the needs of various enterprises. The specific gravity, viscosity or flow of serum separation gel required by different enterprises are not the same. Most suppliers of serum separation gels cannot provide corresponding services, but Desheng Biochemical can adjustment all of data !   What we rely on are not only our complete R&D team, but a number of partners we supported and cooperated since the beginning of R&D.We have experienced the problems encountered by most companies,so we can find fundamental solutions to all kinds of problems in time,and can solve them faster and better.   The two key points for serum separation gel are inertness and specific gravity. The change of any one index may cause problems in the later use of the product. Desheng will continuous test for those need unique index of serum separation gel.   Now Desheng has developed PRP separation gel, which is suitable for beauty tubes. We have cooperated with some beauty centrals for five or six years,and always get satisfactions from them. Desheng Biochemical is a professional manufacturer of blood collection tube additive,welcome to inquiry if you have any requirements.

Bicine buffer is dihydroxyethyl glycine, CAS No. 150-25-4. It is a very versatile biological buffer with same excellent buffering performance as Tris.It has gradually replaced traditional phosphate buffered saline in some demanding biochemical tests.   Bicine is a slightly acidic amino acid derivative with pH buffer range 7.6-9.0.It’s soluble in water and common organic solvents such as DMF, DMSO, DMAc, etc. Sodium hydroxide is usually added into powdered Bicine to adjust the pH value to meet the PH environment requirements for experiments or testing. If the experimental environment needs to eliminate the interference of sodium ions, potassium hydroxide can be used instead of sodium hydroxide, and then the pH meter can be used to adjust the mixing ratio of Bicine solution and lye solution.   The buffering principle of Bicine is similar to the other biological buffers.Bicine is amphoteric, when acid and alkali are added to the reaction system or the pH of the reaction environment changes as the reaction proceeds, it can play a buffering role and maintain the reaction system. It is very important to biochemical detection which involved enzymes or proteins and nucleic acids. The stability and functionality of most organic biomolecules are very sensitive to pH.   The molecular structure of Bicine is similar to that of glycine. The hydrogen on the nitrogen atom of the amino group is replaced by two hydroxyethyl groups, which reduces the hydrolysis ability, improves its stability, and maintain the properties of amino acids and aminoethanols that can form gold complex as a single anion.The buffer system configured with Bicine and sodium hydroxide will not participate in the chemical reaction of the reaction system, nor will it interfere with the experimental reaction, and is resistant to chemical action and enzymatic hydrolysis.   Desheng is a manufacturer specializing in the production and development of raw materials for biochemical testing and in vitro diagnosis. It has rich experience in blood pretreatment, blood pretreatment and biochemical kits. At present, the mature product series include blood collection tube additives, chromogenic substrate, chemiluminescence reagents and more than ten biological buffers including Bicine.

1.Is TRIS packed by powder or solution type? If a large amount of Tris required, it is more economical for you to prepare solution with tris powder.The Tris made by Desheng is refined powder which can be used to prepare solutions of different proportions, concentrations and pH values according to the requirements, and it can be formulated into different buffer systems with other buffers like HCl, acetic acid, boric acid, glycine, EDTA, etc.   2.Why TRIS is the most frequent choice for buyers who need biological buffer? Because tromethamine Tris has superior performance than phosphate buffer, and the price is much lower than HEPES and PIPES,so the Tris buffer is the preferred choice for biochemical experiments.The pKa value of Tris in solution is 8.1 at 25℃, and the effective PH buffer range is 7.1-9.1, which can satisfy most biochemical experiments.   3.Issues should be paid attention to when purchasing TRIS (CAS77-86-1) First of all, we must ensure sufficient stock supply. In particular, some customers have relatively large demand, reaching the ton level or more. If there is no sufficient stock as support, the production time will affect their purchasing. The second is whether the product quality is reliable and whether the purity meets the requirements. It is very convincing to provide a full range of product testing services according to customer application needs. In addition, a group of professional R&D teams needed to provide a good technical foundation for sustainable development.   4.What other products can be prepared from Tris? We can prepare products related to TRIS according to its molecular structure, such as Bis-Tris, Tricine, TES, TAPS, etc.Their molecular structures all contain Tris,and they are buffers often used in biochemical experiments and molecular biology experiments,RNA hybridization and DNA lysis. Due to the pH of Tris buffers is greatly affected by temperature and concentration, so environmental influences should be considered when configure Tris solution .   Desheng is specialized in producing white Tris powder, its purity as high as 99%.And we can custom datas according to your requirements. Pls contact if you need Tris buffer.

The target of the Covid-19 nucleic acid detection is the nucleic acid gene fragment inside the virus. Nucleic acid preservation solution is to protect viral nucleic acid from rapid degradation in vitro, so as to facilitate nucleic acid sequence amplification for detection purposes. Mainly divided into two categories: inactivated and non-inactivated. Disposable virus sampling tubes are usually divided into two types, non-inactivated type and inactivated type. Different types need to be selected for different detection purposes. So how to choose the two virus sampling tubes?   Inactivated preservation solution The inactivated preservation solution is prepared on the basis of nucleic acid extraction and lysis solution. The main ingredients are balanced salts, chelating agents, guanidine salts, and surfactants. There are two types of inactivated preservation solutions: one is the guanidine salt-containing type, which can quickly and efficiently denature proteins, lyse cells to release nucleic acids, eliminate RNases, stabilize viral nucleic acids, and inactivate viruses.Another is the guanidine salt-free type, which contains surfactants and does not cleave the capsid protein on the surface of the virus, maintaining the integrity of the virus and making it difficult for the virus to survive.   Non-inactivated preservation solution The non-inactivated preservation solution can retain the protein coat of the virus and the viral nucleic acid at the same time, and maintain the originality of the virus sample to the greatest extent. In addition to being used for viral nucleic acid detection, it can also be used for virus culture, etc. However, because the virus has not been inactivated, there is a risk of infection if the operation is wrong. The Second Trial Version Work Manual for Viral Nucleic Acid Detection clearly states that sampling tubes with inactivated preservation solution which containing guanidine isothiocyanate or guanidine hydrochloride or surfactants should be choose for population screening.For rapid testing in fever clinics or emergency departments, the sampling tube shall be determined according to the requirements of the nucleic acid detection reagents used.   Regardless of whether it is an inactivated type or a non-inactivated type, the virus sampling tubes must be strictly inactivated and sterilized before sampling to ensure that there are no other microorganisms which may cause the virus to decompose or other influences causing false detection. After swab sampling, if a collection tool or preservation solution of poor quality is used, it will affect the subsequent test results and even cause misdiagnosis. Therefore, you must choose a virus sampling tube produced by a professionally qualified manufacturer.   Desheng is one of the first companies to invest in the R&D and production of virus preservation solutions since the resumption of work in 2020. At that time, there were little companies joining to produce it. With the increase in the demand for nucleic acid testing, a batch of enterprises that have put into production.No matter at the beginning or now, Desheng always remembers to give back to customers with good quality. Only when the quality is guaranteed, can we gain the trust of more customers. At present, it has obtained the production certificate of Class I medical devices.Samples available for new customers,welcome to inquiry.

In the Covid-19 test, whether it is nucleic acid or antigen, the nasopharyngeal swab after sampling needs to be put into a storage tube with a preservation solution. Are the nucleic acid preservation solution and antigen preservation solution for Covid-19 the same thing?Can it be shared? Nucleic acid testing The target of the Covid-19 nucleic acid detection is the nucleic acid gene fragment inside the virus. Nucleic acid preservation solution is to protect viral nucleic acid from rapid degradation in vitro, so as to facilitate nucleic acid sequence amplification for detection purposes. The main components are balanced salts, chelating agents, guanidine salts, surfactants, etc.   Antigen detection The target of the Covid-19 antigen test is the specific protein on the surface of the virus. The main components of the antigen preservation solution are low ionic strength buffers (such as Tris buffer, PBS buffer, etc.) and surfactants (such as Brij58, Triton X-100, etc.).   Viral nucleic acid preservation solution and antigen preservation solution The main function of the antigen preservation solution is to protect the antigen protein from denaturation or decomposition, and it can react with the gold-labeled specific antibody on the detection test strip. The guanidine salt and other components in the nucleic acid preservation solution will denature the antigen protein, affect the antigen-antibody reaction, and cannot form the antigen-antibody complex, resulting in false negative or invalid results. Therefore, the preservation solution of new coronavirus nucleic acid and antigen cannot be shared.   Preservation solutions from different manufacturers cannot be mixed To sum up, nucleic acid detection preservation solution and antigen detection preservation solution are not the same thing. In addition, the antigen preservation solutions of different manufacturers cannot be mixed, and the components of different brands of products are quite different, and the performance (specificity and sensitivity) of the antigen detection reagents of each manufacturer is related to the pH value of the supporting preservation solution. The specificity and sensitivity of the reagents are optimal when the pH for the antigen-antibody reaction of most chromatography methods is alkaline. When using a non-matching sample preservation solution, the pH value of the reaction environment will change, resulting in false positive or false negative results.   Desheng currently produces inactivated and non-inactivated viral nucleic acid preservation solutions. The daily shipment volume is as high as tens of tons. Generally, the customers who cooperate with us are repurchased stably for a long time, which fully shows that the quality is recognized by the public.No matter whether the customer's demand is large or small, Desheng will arrange production and delivery as soon as possible, even if it is a few tens of tons.If you need virus preservation solution or other blood collection tube reagents, please contact Desheng Company.

Tripotassium ethylenediaminetetraacetate, abbreviation is EDTA-K3.As an amino polycarboxylate, it has a strong ability to bind metal ions.And it’s often used as a compounding agent for hard water softeners, removal of scale in boilers,rare element separation agent, antidote for heavy metal mercury, etc. The EDTA K3 produced by our company is mainly used as an anticoagulant in vitro in blood collection tubes to deal with blood samples in the process of clinical blood collection and testing.   Dissolving the EDTA-K3 powder with a certain amount of distilled water,a solution of the required concentration prepared.The inject it into the blood collection tube to form an EDTA-K3 anticoagulant. EDTA-K3 is liquid in glass blood collection tubes and mist in plastic one. After the EDTA-K3 in the blood collection tube contacts the blood sample, it conjugates and blocks the calcium ions coagulation effect in the blood,and stops the blood coagulation from the external source.   EDTA-K3 does not destroy the components of blood cells.It has no effect on the number and size of white blood cells, and hardly affects the shape of red blood cells. It is often used in routine blood tests such as separating and testing of platelets. Combined with our sodium fluoride and separating gel, the anticoagulation effect of EDTA-K3 will be better. The anticoagulation of EDTA-K3 is reversible over a certain period of time. So to ensure the accuracy of the test results, please complete the test within 24 hours.   Compared with sodium citrate anticoagulants and lithium heparin anticoagulants, EDTA-K3 is more effective in inhibiting platelet aggregation.When EDTA-K3 anticoagulation was used for blood analysis, unexplained low platelet counts were found. Therefore, it is not suitable for the examination of platelet kinetic energy. As an anticoagulant, it is not suitable for coagulation experiments.Due to its excellent ability to conjugate metals, it naturally cannot be used in systems containing calcium, potassium, sodium, iron and other metal ions. In addition, EDTA-K3 cannot be used for the determination of alkaline phosphatase and leucine peptidase.   Hubei Desheng is committed to producing high-quality, high-character EDTA-K3 powder We strictly control the pH value, temperature, impurities and drying time of the production solution. Our factory sells directly with competitive price. Welcome new and frequent customers to inquiry.

In the era when Chinese cosmetics are moving towards efficacy evaluation, Hubei New Desheng Material Technology Co., Ltd. has opened the reporting authority of cosmetic raw materials HEPES safety-related information on the raw material safety information service platform of the State Drug Administration in accordance with the requirements of the "Evaluation Specification for Cosmetics Efficacy Claims".And we obtained the reporting code. Since then, our company can independently or authorize domestic and foreign customers to evaluate the efficacy claims of the cosmetic raw material HEPES and upload the efficacy basis.   Cosmetics are processed from various raw materials with different functions and effects for human skin.So the safety of cosmetic raw materials is very important. HEPES produced by our company is an odorless white powder. Under certain conditions of temperature and pH value, N-hydroxyethylpiperazine reacts with sodium chloroethylsulfonate solution and produces HEPES reaction solution. Crystals precipitated by drying from solution,and get the finished product of HEPES.   Although HEPES is a chemical synthetic raw material, it is relatively mild and has no irritating effect on the skin. It is often used in cosmetics for whitening,and repairing.In cosmetics, HEPES not only acts as a PH adjuster to stabilize the PH of cosmetics in a weakly acidic state suitable for human skin, but also prolongs the shelf life of cosmetics. The use of HEPES in cleansing cosmetics can accelerate the softening of the cuticle, promote cell metabolism, shrink pores, and make the skin look fairer and more lustrous; when used in essences and rejuvenating creams, it can promote the absorption of other functional products . Experiments have shown that HEPES also has anti-inflammatory effects, which is a great boon for people with acne-prone skin.   Our company has invested a lot of resources in the research and development and production of HEPES,and can produce high-purity HEPES white powder with excellent properties, which you deserve it. Welcome new and frequent customers to inquiry.We can provide you the safety-related information reporting code of cosmetic raw material HEPES.

The principle of Trinder's reaction is also known as enzymatic method.Under the action of peroxidase, hydrogen peroxide, 4-aminotipyrine (4-AAP), a red quinoneimine compound generates for the determination of light absorption,which is one of in vitro diagnostic reagent method.It is mostly used in biochemical diagnostic reagents to detect liver function, kidney function, blood sugar, blood lipids, etc.   Trinder's reaction is to mix the corresponding new Trinder's reagent, 4-AAP, oxidase and peroxidase to the item to be tested in an appropriate ratio, then add biological buffer and the test substance to cause a color reaction.The value of the item to be measured is calculated by measuring the absorbance of the red quinoneimine compound in the color reaction product. The enzyme in the reaction has specificity and can catalyze the reaction of a specific substance in a targeted manner, ensuring the accuracy of the detection. The biological buffer ensures that the reaction is carried out in the appropriate PH value of the corresponding enzyme.   Traditional Trinder's reagents are phenols (phenol, 4-chlorophenol or sodium 2,4-dichloro-6-phenolsulfonate, etc.) and anilines (N,N-dialkylaniline, N,N-Dialkyl-m-toluidine,etc). Phenols have a small absorption wavelength range, and the substances in the test may interfere with the test results. Aniline chromogen substrates need to be carried out under acidic conditions, which limits the use of enzymes, so they cannot be widely used in practical detection.   Compared with the traditional Trinder's reagent, the new Trinder's reagent has higher water solubility, a wider range of ultraviolet absorption waves of the color reaction product, a wider range of acid-base reaction requirements, and a more sensitive reaction, so it is more practical in biochemical reactions. There are 9 kinds of new Trinder’s reagents independently developed by Desheng, TOOS, TOPS, ADOS, ADPS, ALPS, DAOS, HDAOS, MADB, MAOS, all of which are white crystalline powders with a purity of over 99%. If the content of the item to be tested is little in serum, ALPS, TOOS, TOPS should be used because they are more sensitive to color; if accurate detection is required, MADB, MAOS can be selected, which have higher absorption wavelengths and not easily interfered by other substances; TOOS, ADOS, DAOS color reaction products are stable and not easy to fade; MAOS is suitable for the determination of wavelengths between 550nm-600nm.   Desheng is not only a high-quality manufacturer of the above-mentioned new Trinder’s reagents, our company can also provide raw materials for biological buffers, which provides convenience for your one-stop shopping with more competitive prices. Welcome to inquiry.

Since heparin was discovered, it is still widely used in the prevention and treatment of various thromboembolic diseases due to its rapid onset of action, definite curative effect and reversible anticoagulant effect. However, there are many types of heparin with similar names, such as blood collection tube additive heparin, low molecular weight heparin, enoxaparin, nadroparin, etc., which can easily lead to mutual confusion. What are the types of heparin and what are the differences between each type of heparin? Today Desheng takes you to find out. Heparin is mainly divided into unfractionated heparin (UFH), blood collection tube additive heparin, low molecular weight heparin (LMWH), heparin derivatives (such as fondaparinux sodium), and heparin analogs (such as danaparin).   Types of heparin Unfractionated heparin is a mixture of sulfated glycosaminoglycans (GAGs). It is a mucopolysaccharide sulfate alternately composed of D-glucosamine, L-iduronic acid and D-glucuronic acid, which can be prepared from the lungs of cattle or the intestinal mucosa of cattle, sheep and pigs. Vacuum blood collection tube anticoagulant heparin (sodium heparin or lithium heparin) is an additive in blood collection tubes. It is used in anticoagulant tubes to prevent blood coagulation in vitro after blood collection for a certain period of time. This heparin is usually not of injection grade. It is different from heparin drugs, but its potency is relatively high. Heparin for Cosmetic raw material can be added to nutritional creams, eye creams, acne-removing products and hair growth agents, etc. It has many functions like increasing the vascular permeability of the skin,improving local vascular circulation,promoting the supply of skin nutrients and the excretion of metabolic wastes. It Plays a good role in health care and maintenance of the skin. Heparin with low molecular weight is a short-chain preparation obtained from the separation or degradation of unfractionated heparin. Due to differences in molecular size, anticoagulant activity, preparation method, and manufacturer, commonly used clinical heparins with low molecular weight include enoxaparin, dalteparin, and nadroparin.   Differences between various heparin Different molecular weight The molecular weight range of unfractionated heparin is 3000~30000Da, and the average molecular weight is 15000Da, which is equivalent to 45 sugar units. The molecular weight of low molecular weight heparin is about 1/3 of that of unfractionated heparin, and the molecular weight of fondaparinux is the smallest, only 1728Da. The size of the molecular weight is closely related to the anticoagulant activity and mechanism of action of the drug.   Different mechanism of function The anticoagulant effect of heparin is mainly mediated by antithrombin III (AT-III). Heparin molecule combines with AT-III lysine residue to form a reversible complex, which changes the AT-III configuration.Then the active site of arginine fully exposed to rapidly bind with the serine active center of IIa (thrombin),IXa, Xa, XIa,etc. It accelerates the inactivation of coagulation factors. When heparin inactivates factor IXa/IIa by AT-III, it must combine with AT-III and coagulation factor to form a ternary complex, while when inactivating by factor Xa, it only needs to combine with AT-III. Once the heparin-AT-III-coagulation factor complex is formed, heparin is dissociated from the complex, combined with another molecule of AT-III for repeated use.   Different pharmacokinetic properties Unfractionated heparin can be injected subcutaneously, intravenously or intravenously, but its bioavailability is low during subcutaneous injection, and its elimination in vivo is dose-dependent. In addition, the plasma protein binding rate of unfractionated heparin is as high as 80%, and most of them also bound to endothelial cells, macrophages, etc. That makes its anticoagulant activity unpredictable. Compared with unfractionated heparin, low molecular weight heparin has obvious pharmacokinetic advantages. After subcutaneous injection, the bioavailability of low molecular weight heparin can reach 90%, and the plasma protein binding rate is low, so the anticoagulant effect is more predictable than unfractionated heparin.   It should be noted that the heparin currently produced and developed by Desheng (sodium heparin and lithium heparin) is mainly used as anticoagulant in blood collection tubes.It can neither be injected nor used as a medicinal grade. Its potency is relatively high, generally between 150IU-180IU. Of course, a higher potency can be customized. But the higher the potency, the more expensive the price. If you have purchasing requirements, please contact for details!

Luminol, a solution commonly used in crime scene testing, can identify scrubbed or long-lived bloodstains that react with blood to produce a blue glow.   Luminol is extremely sensitive and is very suitable for testing the presence or absence of bloodstains in the YES/NO dimension, but it cannot guarantee that it is human blood, and criminal investigation needs to use other means to further characterize it; according to its reaction principle, without considering the premise of interfering substances , the fluorescence intensity of the imprint is proportional to the amount of blood. Fluorescence intensity is not equal to the imaging result. Different exposure parameters and methods can collect different images, but generally you only need to fully expose the reaction results to easily identify the presence/absence, so the fluorescence results you generally see are mostly vague.It doesn't mean better developing means won't lead to better pictures.   What is the detected principle of luminol reagent? Its principle is that it will be catalyzed by elements such as metal iron and copper after it’s fused with hydrogen peroxide solution.And the hemoglobin in our human body contains iron.The mixed solution glows blue even encountering very few blood. It has been found that although the DNA in the blood can be destroyed by strong oxidants such as potassium permanganate, the luminol reagent is different. The DNA still can be identified after being dealt with luminol.   Hubei New Desheng Material Technology Co., Ltd. is a manufacturer specializing in the production of chemiluminescence reagents,luminol and isoluminol, as well as acridine ester series. You are welcome to consult.

In serum testing, coagulants can be selected to rapidly coagulate blood, while in whole blood or plasma testing, different anticoagulants are selected to prevent coagulation of collected venous blood.What are the commonly used anticoagulants? Hubei Xindesheng Materials Co., Ltd. has compiled some points of anticoagulants for us.   Citrate The anticoagulation principle of citrate is forming a chelate with calcium ions in the blood to prevent blood coagulation,such as sodium citrate.The color of citrate blood collection tubes are blue or black head.The ratio of anticoagulant to blood in the blue head tube is 1:9 and in the black head tube is 1:4.The blue-headed tube is often used for determinations of blood coagulation,and the black-headed tube is used for erythrocyte sedimentation rate.   EDTA The anticoagulation principle of EDTA is forming chelate with calcium ions in the blood to prevent blood coagulation such as EDTA-K2.The head of EDTA tubes are in purple.It normally used in blood routine examination, blood cell morphology examination.   Oxalate The anticoagulation principle is oxalate reacts with calcium ions to form calcium oxalate precipitation, thereby preventing blood coagulation. Such as sodium oxalate, ammonium oxalate, etc.The head of oxalate tubes are in gray.It is often mixed with sodium fluoride which can inhibit glucose glycolysis for blood glucose determination.   Heparin Heparin is a physiological anticoagulant which widely present in human tissues such as liver and lung. It takes effect by enhancing the activity of antithrombin III (AT-III), inactivating serine protease and preventing the formation of thrombin, such as lithium heparin, sodium heparin, etc.The head of heparin tubes are in green.It normally used in various biochemical tests.   In addition, Wuhan Desheng Biochemical Technology Co., Ltd. is a professional blood test reagents in research and development, production and sales. We are an established company specializing in the production of anticoagulant raw materials used in blood collection tubes, including sodium heparin, lithium heparin, dipotassium EDTA, tripotassium EDTA, disodium EDTA, potassium oxalate, trisodium citrate, sodium fluoride, etc.Welcome your consultation.

Anticoagulants are preparations added to the blood to prevent blood coagulation by inhibiting the synthesis or function of various coagulation factors exist in the blood. Anticoagulants are commonly used for conditions including deep vein thrombosis, pulmonary embolism, coronary thrombosis, and disseminated intravascular coagulation. The anticoagulant raw materials produced by Desheng mainly include sodium heparin, lithium heparin, ethylenediaminetetraacetate (dipotassium EDTA, tripotassium EDTA, disodium EDTA), which are mainly used in blood collection tubes to store blood.   Sodium heparin, lithium heparin are mainly used to promote the activity of antithrombin III, which inactivates thrombin to prevent blood clotting. The potency of heparin sodium and lithium heparin produced by our company is 150IU/mg, and the potency of anhydrous is 160IU/mg. It is mainly used for in vitro diagnosis and can be adjusted according to customer requirements. Injecting heparin sodium or heparin lithium into the blood collection tubes can be used for anticoagulation of blood samples for emergency biochemical, TORCH, and blood flow detection.   EDTA potassium salt anticoagulant is an amino polyhydroxy acid that can effectively conjugate calcium ions in blood to prevent blood coagulation. EDTA potassium anticoagulant has little effect on the coagulation of blood corpuscles and the morphology of blood cells. The EDTA dipotassium and EDTA tripotassium anticoagulants produced by our company are both used in vitro and cannot be used for injection. They have excellent properties and have a purity of over 99%. Add potassium salt of EDTA into the blood collection tubes, which can be used for general blood routine examination and blood ammonia detection, but cannot be used for blood coagulation and trace element examination.   With 17 years in research and production, Hubei New Desheng Material Technology Co.,ltd developed all kinds of blood collection tube additives like sodium heparin, lithium heparin, EDTA dipotassium,EDTA tripotassium,EDTA disodium.What we can provide is competitive price and good quality,welcome to inquiry.