China Wuhan Desheng Biochemical Technology Co., Ltd Company News

When it comes to chemiluminescence, among many luminescence systems, the earliest chemiluminescence phenomenon is actually found in organisms, such as fireflies. By the end of the 19th century, people discovered that simple non-biological organic compounds can also produce chemiluminescence. For example, Lofen base (2,4,5-triphenylimidazole) can emit green light when oxidized by hydrogen peroxide and other reagents in alkaline medium. After that, the analysis of chemiluminescence reagents for acridinium ester derivatives became the 20th century. A popular research content in the 1980s, more and more luminescence reagent manufacturers prefer the use of acridinium esters, and the pace of domestic research is not far behind. Acridine ester chemiluminescence systems are widely used in various inorganic and organic compounds, biological and pharmaceutical analysis fields due to the advantages of no catalyst, mild reaction conditions, and good reproducibility.   However, there are not many manufacturers of acridine esters in China, and there are few good manufacturers. Desheng can keep up with the market development direction and develop acridine ester products that satisfy customers. It is really commendable. A strong scientific research team, strict quality inspection department, and a dedicated chemical reagent luminescence laboratory in a dust-free and sterile environment provide a solid guarantee for the quality of the products. Chemiluminescent acridinium ester There are actually 8 different series of acridinium esters, such as acridinium ester DMAE-NHS, acridinium ester NSP-DMAE-NHS, acridinium salt NSP-SA, acridinium hydrazide NSP-SA-ADH, etc., although they all Acridine ring, but the tested substances are different, and the acridine series used will be completely different. Many buyers often need to purchase three or more different series of acridine esters when purchasing. After asking many manufacturers, It is found that the production capacity of many manufacturers is far from enough, but Desheng will not have this kind of problem, not only the variety is complete, but also the inventory is sufficient. Wuhan Desheng is a professional manufacturer of chemiluminescence reagents. There are not only the above 8 series of chemiluminescence reagents, but also other chemiluminescence products such as luminol and isoluminol, which can fully meet the needs of manufacturers. Compared with other manufacturers, Desheng’s acridine ester products have the characteristics of fast luminescence reaction, high sensitivity and strong stability. Desheng has always been at the forefront of chemiluminescence reagents, and obtained with high-quality quality and good technical services. Has been widely recognized by the industry.

Chemiluminescence immunoassay is currently the most advantageous immunoassay method. The core reagent is the chemiluminescence substrate. For example, the peroxidase substrate luminol and the alkaline phosphatase substrate AMPPD are widely used. There are acridine ester chemiluminescence reagents, which can directly generate chemiluminescence without enzyme catalysis.   Compared with chemiluminescence substrates such as luminol or alkaline phosphatase, acridine ester chemiluminescence reagents have obvious advantages. Its luminescence reaction does not require enzyme catalysis, and the luminescence detection step is simple and easy to automate; and In terms of sensitivity, acridine esters are many times higher than luminol and peroxyoxalate, and can detect a smaller amount and a wider range of detection indicators. Therefore, acridine ester chemiluminescent substrates are also more advanced immunoassay reagents.   What are the advantages of acridine esters compared with other chemiluminescent reagents   Acridine esters have a higher quantum yield. Compared with luminol, its chemiluminescence efficiency is five times or more than that of luminol; secondly, the properties of acridinium esters are more stable, and are affected by other substances in the reaction system. The impact is also smaller and storage is convenient. Thirdly, the chemiluminescence process of acridinium ester has a fast reaction speed, which can cause luminescence in the presence of hydrogen peroxide or other peroxides. The characteristics of the chemiluminescence reaction mechanism of acridinium esters show that the effect of light quenching is small, and the dissociation of the luminescent group and the luminous efficiency during the reaction will not be affected by the length of the connecting arm.   Acridinium esters and their derivatives can realize the chemiluminescence analysis of biological macromolecules such as antigens, antibodies and DNA, and are a kind of excellent chemiluminescence immunoassay labeling reagent. The main principle of action is to mark these biological macromolecules by directly or indirectly interacting with the amino, carboxyl or phosphoric acid groups on the biological macromolecules through the unique substituent groups on the molecular structure.   Among the many chemiluminescence reagents, the price of acridine esters is also the highest, but Desheng still provides luminol, isoluminol and other types of chemiluminescence reagents, which can meet the needs of different experimental detections. The luminescent reagent is not the most advanced, but the appropriate one.

The only difference with imported brands is the price. The spot price of Desun Carbomer is as low as 100 yuan/kg, and the quantity is limited, so I missed waiting for the next batch. It is used for cosmetic raw materials, pharmaceutical gels, hand-washing gels, etc. For details, please contact Desheng website or the phone number reserved on this website. Desun has been committed to the research of polyacrylic acid. In addition to creating serum separation gel series, the carbomer series is also a long-made series. With 15 years of R&D and production experience, Desun carbomer products are more trustworthy! Carbomer powder   Carbomer products were first produced abroad, and now a foreign brand controls more than 80% of the market. The reason for this situation is nothing more than the gap in technical capabilities. After continuous research and development efforts in recent years, Desheng has finally been able to In some of these types, we have achieved the situation of "people do not have me, others have me superior", but after all, they are still lacking in reputation. The price increase is also to expand the reputation, win by quantity, and hope more customers Be able to know Desheng. Desheng proposes that Carbomer products are offered at the lowest price, with the best product quality assurance, free samples, and perfect after-sales service. If you have any questions, you can contact a professional one-to-one sales manager for full-time service, and for product problems, technical participation in the whole process , You understand, we communicate with each other, we understand what you don’t understand, we teach! carbomer powder As a widely used carbomer product, retail and wholesale, small quantities and large quantities, Desheng are very welcome, and hope that all partners can take time to visit the factory, so as to facilitate further cooperation and win-win in the future. The regular guarantee of Desun Carbomer is 10kg/bag. According to customer requirements, product indicators can also be customized and special packaging requirements can be subpackaged. According to market price changes, this price will also increase or decrease according to the needs of each customer. Please ask all friends who need Carbomer to call for consultation. It is also very good to add a standby raw material supplier!

The full name of Tris base is tris(hydroxymethyl)aminomethane. It is a widely used biological buffer. Its hydrochloride solution is not only widely used as a solvent for nucleic acids and proteins, such as TAE and TBE buffers, especially nucleic acid solutions. . It contains primary amines, so reactions related to typical amines occur, such as aldehydes. Tris also complexes with metal ions in the solution.   As a domestic tris manufacturer, Desheng Biotech produces high-purity white crystals in powdered tris. Recently, I received a call from a customer and reported the high temperature situation. The viscosity of the product increased significantly around 126 degrees. The originally dispersed powder gathered into fine particles, and the reaction was carried out in an anhydrous dry reactor, basically eliminating the influence of moisture. Will this change affect product quality?   TRIS base powder   In fact, this involves the effect of temperature on the crystal structure of Tris. The molecular crystal structure responds to changes in externally applied conditions (such as temperature and pressure) in a complex balance between strong intramolecular bonding, moderate intermolecular interactions (such as hydrogen bonds) and weaker intermolecular van der Waals contacts result. Usually we also consider the influence of pressure on the crystal morphology. We have passed the autoclave test. This pressure above 75Mpa obviously affects the crystal shape. The additional thermodynamic requirements for effective space filling become more and more important. However, the pressure of the autoclave usually does not exceed 20Mpa, so the influence of pressure is not discussed here.   Our measurements are all performed using neutron powder diffraction. The characteristic of the crystal structure is the van der Waals interaction between the molecular chain formed by the NH...NH bond. Although hydrogen bonding is the strongest intermolecular contact, most of the sublimation enthalpy may be due to weaker but numerous van der Waals interactions. Analysis of the thermal expansion data based on the phonon frequency determined in the periodic DFT calculation shows that the expansion at very low temperatures is controlled by the external lattice mode, but above 126°C, the influence of the deflection mode of the intramolecular ring also changes Significantly. The main direction of thermal expansion depends on the sensitivity of different van der Waals interactions to distance changes.   The main value of strain generated when pressure is applied is similar to the value determined in the variable temperature study, but it is isotropic because it needs to fill the void under high pressure to minimize the volume. When the temperature is lowered to room temperature, the hydrogen bond between the molecules weakens, the H interaction between the molecules, the interaction between the dipole moments makes the force between the molecules weaker, and the tris presents a loose white powder structure. This is what we are. The shape of the finished product usually seen. The above changes are all physical changes, which are instantaneous changes in the polarity between molecules and do not change the chemical properties of the molecules themselves, so there is no product quality problem. You can use it with confidence.   Desheng Biochemical is a high-tech enterprise focusing on the fields of life science and biotechnology, providing Chinese experts and scholars with a full range of high-quality products. The tris, Tris-HCL, Bicine, CAPS, MOPS, TAPS,HEPES, etc. produced have been widely used in life science basic research, development and application, biotechnology and many other fields. Customers are located in universities, research institutes, hospitals, biotechnology companies and food industry units.

Blood anticoagulant is the application of physical or chemical methods to remove or inhibit some blood coagulation factors, prevent blood coagulation, known as anticoagulation. Chemical agents or substances that can prevent blood coagulation are called anticoagulants or anticoagulants.   Desheng biochemical is specialized in the R & D, production and sales of vascular additives, in vitro diagnostic reagents, buffers and luminescent substrates. In the aspect of blood vessel additive, it has formed independent intellectual property rights and professional production and research capacity.   To provide products and raw material solutions for more than 100 domestic and foreign manufacturers. Desheng provides 6 different blood coagulants for you to choose from. What are the similarities and differences between these 6 blood coagulants? Let's make a comparison.   Heparin sodium   White amorphous powder, odorless, soluble in water, easy to absorb moisture, average molecular weight of 15000, stable at room temperature. The heparin sodium titer of our company is more than 150 IU / Mg, and the anhydrous titer is more than 160 IU / mg. Other indexes were controlled according to the standard of heparin sodium.   This product is suitable for the collection and anticoagulation of blood samples in clinical biochemical examination and emergency biochemical examination, and also suitable for the collection and anticoagulation of blood samples in some Hemorheology projects.   Heparin sodium is recommended as an anticoagulant in the determination of ion content in blood, because it is the least likely to interfere with the determination of other ions. This product is not a drug and can not be used as an injection. It is forbidden to directly inject into human body and animals.   Heparin lithium   It is also a white amorphous powder, which is replaced on the basis of heparin sodium. It is stable at room temperature. The routine potency of heparin lithium was more than 150 IU / Mg, which was controlled according to the standard of heparin API.   When heparin lithium has impurities, abnormal smell, color and beyond the validity period, and heparin lithium solution appears turbid, it may be that heparin lithium solution has been contaminated or deteriorated, so it is forbidden to use.   Potassium oxalate   White monoclinic crystal, soluble in water, used in medicine and straw hat bleaching; also used as chemical reagent, fabric detergent; used as anticoagulant for venous blood vessel samples.   White crystal powder, odorless, soluble in water, easy to absorb moisture, molecular weight 404.6, pH 4.8 ± 1 (5% aqueous solution, g / ml), water solubility ≥ 60% (g / ml, 25 ℃). It is stable at room temperature. The main content of potassium EDTA in our company is more than 99.0%. Other indicators are shown in the product test report.   When there are impurities, foreign matters, abnormal smell, color, serious moisture absorption and beyond the validity period of EDTA, it is forbidden to use.   Potassium EDTA   This product is specially used for in vitro anticoagulation of blood. It is an anticoagulant additive for clinical blood test. It is used for the pretreatment of blood samples (anticoagulant treatment) in the process of clinical blood collection and test.   This product can be sealed in a cool and dry place, away from light and moisture. The water solution of this product can be sealed at normal temperature under sterile condition. It is suggested that this product should be ready to use in water solution, and should not be stored in solution state for a long time.   Sodium citrate   White crystal powder, easy to absorb moisture, can be used as flavor agent and stabilizer in food and beverage industry; used as anticoagulant, expectorant and diuretic in pharmaceutical industry; used as adjuvant of nontoxic detergent instead of sodium tripolyphosphate in detergent industry; used as excellent chelator / complexing agent in chemistry; used in industry for sodium citrate. It is also used in brewing, injection, photographic medicine and electroplating.

Chemical reagent is a kind of fine chemicals with various purity standards, which can be used for teaching, scientific research, analysis and testing, and can be used as pure and ultra pure functional materials and raw materials for some emerging industries. Generally, it can be classified by composition and purity. It is not only an important tool for modern scientific research and product inspection, but also an indispensable material for emerging technology.   According to the major categories, chemical reagents can be divided into 11 categories: General inorganic reagents, general organic reagents, high-purity inorganic reagents, high-purity organic reagents, general analytical reagents, instrumental analytical reagents, biochemical and molecular biological reagents, clinical laboratory reagents, isotope reagents, special chemicals and other reagents. Chemical reagents can also be divided into high-purity reagents, high-grade pure reagents, analytical pure reagents, etc. The specifications of chemical reagents in China are basically classified according to purity. The quality indicators issued by the state and competent departments mainly include superior grade purity, analytical purity, chemical purity and experimental purity.   Chemical reagents of different colors 1. High grade purity (GR, green label) (grade I): high content of main components, high purity, suitable for analysis and research, some can be used as reference materials. 2. Analytical purity (AR, red label) (grade II): high content of main components, high purity, low interference impurities, suitable for industrial analysis and chemical experiments. 3. Chemical purity (CP, blue label) (grade III): high content of main components, high purity, interference impurities, suitable for chemical experiments and synthetic preparation. 4. Experimental purity (LR, yellow label): high content of main components, poor purity, no choice of impurity content, only suitable for general chemical experiments and synthetic preparation.   In addition to the above four levels, there are: Reference Reagent (PT): specially used as reference material, which can be directly prepared into standard solution. Spectral purity reagent (SP): indicates spectral purity. However, due to the fact that the organic matter can not be displayed in the spectrum, sometimes the principal component is less than 99.9%, so we must pay attention to it when using it, especially when it is used as a reference substance. The reagent whose purity is much higher than that of superior grade is called high purity reagent (I > 99.99%). High purity reagents are developed on the basis of general reagents. High purity reagents are especially suitable for trace analysis.   More than 95% of the biochemical reagents produced and developed by Desheng include chromogenic reagents, biological buffers, blood collection additives, chemiluminescence reagents, etc., which are analytical pure reagents with high purity. The company covers an area of 3000 square meters, has modern clean workshop and advanced production equipment, strong technical force, a number of professional R & D teams, and advanced and complete analytical detectors The perfect quality inspection and quality assurance system ensure that we provide stable high-quality products to the market. We warmly welcome all major enterprises to visit our company.

Carbomer is very common in daily chemical products, but people rarely find it. For example, toothpaste, skin care lotion, and bath shampoo all exist in it. It is even more important in the hand-washing disinfectant gel just needed during the epidemic. This kind of hand sanitizer is not liquid and will not flow randomly, and it has disinfection, Features such as no-washing are very suitable for quick disinfection of hands. As an indispensable raw material in daily chemical products, the annual purchase quantity of Carbomer will naturally not be small. So how to choose a high-quality carbomer supplier? In response to this problem, this article analyzes from the following aspects.   Desun Carbomer powder and gel samples   1. Guarantee products and guarantee services   By investigating related companies, we can find that high-quality carbomer manufacturers can master more advanced technologies, conduct in-depth explorations with customers, and negotiate cooperation related matters. In early 2020, the company invested a lot of capital, manpower and material resources, and now has A group of professional technical personnel can guarantee that the indexes of the raw materials produced by Carbomer are qualified and up to standards, comparable to international brands. Not only that, when encountering quality problems, Desheng never shirks, but promptly returns them. To ensure that the interests of customers are not harmed.   2.guarantee the delivery speed   The quality of the purchased product is the key, and the delivery speed is also what many customers care about. If the delivery is too slow, many important customers will be lost. No matter how good the product quality is, once the delivery cycle is long, the customer experience will be greatly reduced. After the equipment is upgraded and modified, the monthly output can reach the ton level, and the delivery is very timely. Under normal circumstances, placing an order on the same day can guarantee timely delivery on the same day. If the quantity is large, it can basically reach the customer in 3-5 days, so here Don’t worry about it.     3.to ensure a very high product-to-performance ratio   When choosing what kind of carbomer raw material company to cooperate with, the quotation provided by the relevant company is also an important reference standard, especially when the demand for carbomer is large, the corresponding raw material purchase volume will also double. If the supplier can provide a more competitive quotation, there will definitely be more room for maneuverability in terms of cost control. Desheng is the manufacturer of Carbomer, direct sales of raw materials. So compared with other traders, the product cost performance will be higher.   I believe that after reading the above analysis, you will understand how people who really know how to choose carbomer raw materials suppliers, I believe Desheng will be your trusted choice. Now the company has begun to implement mass production, with an average daily output of 1t, and has rich experience in exporting. If necessary, please call for detailed inquiry.

When many suppliers refer to carbomer 940, they first think of Lubrizol or Tianci. Because of the monopoly of Lubrizol and its brand cooperation, many customers lose their supply chain. Today, let's take a look at the cabom manufacturers besides Lubrizol and Tianci.   When you are looking for the supplier of carbomer 940, you are used to searching on the search engine. I don't know if you have noticed. Desheng is often ranked in the top. Established in 2005, Desheng is specialized in the production and development of vascular additives, in vitro diagnostic reagents, buffers and luminescent substrates. Cabom is the top priority of the company's products. Desheng employs professional and technical personnel to continuously improve the product quality, and has a special quality department for inspection. Unqualified products will never reach customers.     In order to seize the market popularity of Carbomer, many manufacturers purchase carbomer raw materials at low prices and provide them to purchasers, resulting in a lot of unqualified phenomena after use. Desheng is a professional carbomer manufacturer. Its products are not only of good quality, but also of high cost performance. Now we launch the year-end preferential activities. If the order volume is large, the price is as low as 100 yuan / kg. On the premise of ensuring the quality of products, Desheng also provides perfect after-sales service and promises to return and exchange the goods free of charge if there is any quality problem, which provides the quality assurance for the buyers and solves the troubles for the customers.   Although there are many series of Carbomer, Desheng mainly produces carbomer 940 and carbomer 980, because these two kinds of applications are the most. It should be noted that carbomer has strong moisture absorption, so it must be sealed during storage to avoid moisture absorption and caking in exposed air. Carbomer produced by Desheng is packed in non-toxic polypropylene plastic bag, moisture-proof and airtight, and then packed in cardboard barrel. The conventional packaging is 10kg / bag, and Desheng can pack it according to customers' requirements. Samples can be provided, business friends in need can directly contact the official website customer service to get the use of the equipment.

Since December 2019, the pneumonia epidemic caused by the new coronavirus has spread continuously, affecting the heartstrings of every Chinese. The current epidemic is a great challenge for medical, diagnostic and biopharmaceutical companies from virus detection, biosafety protection of medical staff and testing personnel to detection of patient immune system status. Life is supreme, Desheng fights the "epidemic"-Desheng successfully developed virus preservation solutions at the beginning of the epidemic to help safe and efficient virus detection and clinical testing.   At present, the form of prevention and control of the new coronavirus is still very severe. The Hebei epidemic is worrying the whole country. Many celebrities donate money and materials to support Hebei’s fight against the epidemic. In the face of the epidemic, nucleic acid testing cannot tolerate a sloppy approach. There is no doubt about the importance of collection and preservation. If there is a problem with sample collection, no matter how well the subsequent work is done, the result will be invalid. Choosing the right virus preservation solution can make the new crown detection more effective! Then when choosing a virus preservation solution, we need to pay attention to the following aspects: 1. The manufacturer can ensure the high quality of the virus transport media raw materials Highly responsible virus preservation liquid manufacturers can not only fulfill their promises, but also ensure that the facts are described without exaggeration, such as the strict selection of raw materials to prevent fraud. The irresponsible manufacturers will only exaggerate to promote the order. In this process, the customer should keep his eyes open and distinguish right from wrong.   2. Use inactivated virus transport media The current nucleic acid detection is to detect the viral RNA in the sample, and the virus needs to be lysed, so as long as it can ensure the integrity and stability of the viral nucleic acid, it does not need to save the live virus. Therefore, in the current situation of fighting the new coronavirus epidemic, it is more ideal to inactivate the virus while collecting samples. Therefore, Desheng recommends the use of inactivated virus preservation solution, which can inactivate the virus and ensure that the virus nucleic acid will not be degraded when stored at room temperature.   3. Choose a virus preservation solution manufacturer with safe transportation Because the virus preservation solution is liquid, leakage will occur if the packaging is not in place and a little bump, which will cause very large losses to customers. Therefore, the selection of packaging materials, structure design, manufacturing process, etc. must be It is necessary to check the quality of the product before delivery. Details determine success or failure. No matter how good the quality of the product, without a good purchase experience, many important customers will be lost.   The virus transport media developed and produced by Desheng are divided into inactivated and non-inactivated types. Different types of virus preservation solutions can be selected according to experimental needs. The current situation of the new crown epidemic is severe. People returning from other provinces not only need to be isolated, but also nucleic acid testing. At this time, choosing the right nucleic acid virus transport media can greatly save procurement time and cost. If you have any questions or needs, please call for detailed consultation. Will be your right choice.

The additive is the core raw material in the blood collection. Its quality directly determines whether the clinical test can be carried out in time, the accuracy of the test results and the reliability of the diagnosis results. Desheng, as a manufacturer of vascular additive, has the responsibility and obligation to provide stable quality additive for customers and patients, so as to ensure the accuracy and timeliness of test results.   Analysis of common problems and causes in the use of serum separation gel:     A. Glue difficulty: the temperature is too low. In winter, the temperature drops, the weather is cold, the viscosity of separation gum increases, and the process of adding gum is difficult. On the one hand, in winter, glue is heated. Serum gel can withstand high temperature below 80 ℃. Now many equipment production company glue machine with heating function, for blood collection enterprise provides a solution. In addition, reducing the viscosity of separation gum can also solve some problems, but it is not the fundamental solution.   B. Flow: after the serum separation gel is added, the flow distance of the separation gel is too large when the test tube is placed horizontally, and some even flow to the nozzle. This is because the intermolecular chemical force has not been fully recovered and the network state has not been formed. The first solution is to increase the thixotropy of the separation gel, but it will cause the difficulty of adding the gel; the second is to put it upright for several hours, and then put it flat after the thixotropy of the separation gel is restored.   C. Bubble problem: vacuumize after adding glue, bubbles will appear in serum separation glue, or bubbles will appear after irradiation sterilization. This is because there is invisible air in the separation glue during the process of adding glue. When heated in vacuum or during irradiation sterilization, the air in the serum separation glue slowly expands and becomes visible bubbles. In the process of separating glue production and adding glue, air should be reduced as much as possible.   D. The problem of blood separation glue not turning over: some blood separation glue collection vessels will not turn over in clinical practice, usually due to insufficient centrifugal force or insufficient centrifugal time. Increasing centrifugal force or prolonging centrifugal time will basically solve the problem. There are also some serum gel because of aging and other factors do not flip, belongs to the quality of the gel.     E. Turn the serum separation gel over to the serum: This is caused by the small specific gravity of the separation gel. In recent years, this kind of situation will not appear basically. Before and after 2010, our company had caused this situation because of the detection error, which caused great problems to customers, and the company also lost a lot.   F. Detector alarm: in clinical examination, the problem of blood vessel alarm often appears. In the past, the industry always thought that it was caused by oil drops or fragments of separation glue. After years of follow-up analysis, we have found the root cause of this problem. The alarm of the instrument is that the blood is not completely coagulated and centrifuged, which causes the fibrin filament to float in the serum. When the probe sucks the sample, the fibrin filament is inhaled into the probe, which causes the instrument to block and give an alarm.   Desheng is specialized in the R & D, production and sales of blood collection additives and blood test reagents. In the aspect of blood vessel additive, it has formed independent intellectual property rights and professional production and research capacity. We have accumulated rich knowledge and experience in the pretreatment of blood samples, and have the advantage of professional technical services.

In the field of daily chemicals, there are many kinds of thickeners. Why is carbomer the only one that is in demand? Carbomer is a kind of polyacrylic acid cross-linked polymer, which is mainly used for thickening of daily chemical products, and can achieve the effect at a very low concentration. Such as shampoo, shower gel, detergent, including some cream cosmetics, usually use carbomer to increase viscosity, most daily chemical products contain this component. De Sheng carbomer powder and gel sample   In the past few years, the global market of cabom has developed rapidly, with an average growth rate of 11.98% from 2013 to 2017. In 2017, kapom's global revenue was nearly $736 million; its actual sales volume was about 57600 tons.   In 2020, due to the spread of the epidemic in the world, many domestic and foreign manufacturers of carbomer will be forced to suspend business temporarily due to the epidemic. As a result, the supply of carbomer in the market will be tight, and the price will soar from the initial dozens to hundreds. The crazy index is like a rocket launch. But after going crazy, now capom also slowly tends to calm down, but this calm is also turbulent.   The outbreak of novel coronavirus pneumonia has be taken by surprise for the medical products industry. Masks, protective clothing, disinfection supplies and other medical supplies are seriously in short supply. The shortage of masks has led to drastic fluctuations in the prices of upstream raw materials of masks, such as melt blown non-woven fabrics and polypropylene.   At the same time, there was a shortage of commonly used hand sanitizers during the epidemic period, and the strong demand led to the rapid rise in the price of thickening agent carbomer. But then the market went into chaos, with prices changing every day.   As more and more enterprises join in the industry of producing Carbomer, the price of carbomer has been fluctuating. Although the fluctuation range is not very large, there are many practical problems involved. If you want to buy the product you want at a considerate price, it may take a lot of time and experience. Now I have good news to tell you that it can not only let you buy good products, but also have intimate prices.   In order to thank the new and old customers for their support and love, De Sheng has made great breakthroughs in the transparency of product quality. This month, we have also made a preferential adjustment in the price. For kapom above ton level, we only need to buy it at 100 yuan per kilogram, and it is a spot trip. If we miss this wave, we will have to wait for next year. What are you waiting for? If you have good quality and price, we will take decisive actions. If there are any problems in the later quality, we will solve them for you.

The most commonly used enzyme preparation in enzyme-linked immunoassay is HRP horseradish peroxidase. There are three types of substrates in biochemical detection, and there are mainly three types, namely chromogen substrates such as TOOS, MAOS, and fluorescent substrates. Substrates, chemiluminescent substrates such as luminol. Among them, chemiluminescence substrates are also used in chemiluminescence analysis, which is becoming more and more popular. Whether it is a chromogen substrate, a fluorescent substrate or a chemiluminescence substrate, it is used as a labeling and detection method, which plays a key role in the accuracy and sensitivity of the detection result. The most popular one is chemiluminescence immunity. analysis. luminol powder The development of different substrates in biochemical testing: In terms of the development time of the detection method, the fluorescent substrate is the product of peroxidase developed after the chromogen substrate, and the detection sensitivity is higher than that of the chromogen substrate. Several fluorescent materials of different colors can be used at the same time. , But the equipment is expensive, the detection cost is high, and it is easily interfered by autofluorescence generated by cells or other molecules, and it is sensitive to light and unstable during observation and storage. After fluorescent substrates, the discovery of luminol-like chemiluminescent substrates brought horseradish peroxidase HRP substrates into a rapid development stage, and various chemiluminescent substrates greatly enriched horseradish peroxidase Applications. The difference between chemiluminescence and fluorescence: Chemiluminescence is different from fluorescence. It means that the chemical energy generated in the process of chemical reaction is absorbed to stimulate molecules and emit light. Fluorescence is the light emitted by absorbing light energy to excite molecules. This is chemiluminescence and The difference in fluorescence lies in the different forms of excitation energy that form excited molecules between the two, one is chemical energy and the other is light energy. Chemiluminescence detection has high sensitivity and low background, so it is widely used. Currently common chemiluminescent substrates, including luminols, peroxyoxalates, and acridine esters, are several chemiluminescent reagents commonly used in actual chemical analysis and determination, and are used in drug analysis, environmental monitoring, etc. The field also has important applications. The above-mentioned chemiluminescence reagents are specially produced by Desheng, but it should be noted that acridine esters can emit light directly and do not require enzyme catalysis.