Wuhan Desheng Biochemical Technology Co., Ltd

Recently, good news came from the Huanggang new production base of Hubei Xindesheng Material Technology Co., Ltd. - all equipment installation work in the new factory has been completed, and key processes such as flaw detection, pressure leakage testing, and single machine debugging have been successfully accepted. This marks the official transition of the project from the construction phase to the system integration debugging and trial production preparation phase, laying a solid foundation for the subsequent full line integration debugging and formal production. Hubei Xindesheng Huanggang New Production Base is located in the Chemical Industry Park of Huanggang High tech Zone, mainly engaged in the research and production of biological buffering agents and carbomer materials. The project covers an area of approximately 80 acres, with the construction of modern production workshops and related public and auxiliary engineering and environmental protection projects. It plans to develop high-end biological buffering agents such as Tris, Hepes, serum separation gel, as well as pharmaceutical and electronic new material products. After the new factory is fully built and put into operation, it will significantly expand the production capacity of biological buffering agents and IVD core raw materials. The company's scale production capacity, raw material quality control level, and large-scale order delivery ability will achieve a leapfrog improvement. All equipment installation is in place, and the key process has passed the acceptance inspection Equipment installation is the core process of chemical project construction. Since the equipment was installed on site, the project team has scientifically organized construction and coordinated progress to ensure that all work is efficiently completed according to the milestones. As of now, all production equipment in the new factory has been installed in place, and dozens of customized large-scale reaction vessels and related supporting equipment have been completed in place and fixed. After the installation of the equipment was completed, the project team immediately carried out systematic quality inspection work: Ultrasonic testing: Comprehensive non-destructive testing was conducted on key pressure bearing components such as pressure vessels and pressure pipelines. All welds and connections met the design standards and safety specifications, and the test results were all qualified. Pressure testing and leakage testing: Strict pressure testing and leakage detection were conducted on all pipeline systems and equipment to ensure that there are no hidden dangers of leakage throughout the production process, and the system's sealing meets the design specifications. Single machine debugging: Each device has completed no-load and load operation tests, and core parameters such as motor rotation, temperature control accuracy, mixing rate, and smooth feeding and discharging have all met the design requirements. The equipment is operating in good condition. The successful acceptance of the three key processes mentioned above signifies that the hardware facilities of the new factory are ready for joint testing. The installation of the self-control system is completed, and the joint debugging and testing are about to end At the same time as the hardware equipment is in place, the installation of the new factory's automation control system has also been fully completed. As the "nerve center" of modern chemical production, the self-control system covers the full process automation management from raw material feeding, reaction control, temperature and pressure regulation to finished product packaging. At present, the hardware installation, wiring, and system configuration of all self-control equipment have been completed. The joint debugging and testing work is about to be completed. After the completion of the joint debugging and testing, the entire production line will achieve an intelligent operation mode of "one click start stop, full process monitoring, abnormal alarm, and automatic adjustment", which not only greatly improves production efficiency, but also effectively ensures the consistency and stability between product batches - this is crucial for fine chemical products such as biological buffers that have strict requirements for purity and batch differences. The preparation of the trial production plan has been completed and the countdown to production has begun As a key link in the project's transition from construction to operation, the preparation of the trial production plan has been completed. The trial production plan covers the entire process operation specifications, process parameter settings, quality control standards, safety emergency plans, and personnel training plans for feeding and testing. In the process of formulating the plan, the technical team fully combined the performance parameters of the new equipment with the rich production experience accumulated by the company in the field of biological buffering agents over the years, and carried out refined design for each step of the operation. The finishing work mainly involves the final confirmation and approval process of some detailed parameters, and is expected to be completed in the near future. After the completion of the plan preparation, the project will officially enter the trial production stage, and the new factory will welcome the first batch of products to be produced offline. Leapfrog increase in production capacity helps to localize IVD raw materials The completion and operation of Huanggang New Factory is of great significance to Hubei Xindesheng and even the entire biological buffer industry. In terms of production capacity, after the new factory is put into operation, the annual production capacity of biological buffering agents and other products will reach 5000 tons, and the overall production capacity will be significantly increased. The enhancement of large-scale production capacity will effectively ensure the stable supply of large-scale orders from downstream customers. In terms of quality, the new factory is equipped with advanced automation control system and strict quality inspection system. The product purity can be stably controlled at over 99%, and the difference between batches can be controlled within 1%, which can better meet the increasing demand for high-end biological buffering agents in domestic and foreign markets. At the industry level, as an important component of IVD in vitro diagnostic core materials, the localization and substitution process of biological buffering agents is accelerating. The commissioning of the new Huanggang plant will further strengthen the domestic ability to independently supply biological buffering agents and help ensure the safety and stability of the industrial and supply chains. Please stay tuned for further updates on trial production and official production.

1, Get to know MOPSO - an important member of the Good's buffer family 3- (N-morpholino) - hydroxypropanesulfonic acid (MOPSO, CAS number 68399-77-9) is a high-quality zwitterionic biological buffering reagent with the molecular formula C ₇ H ₁ NO ₅ S and a molecular weight of 225.27. Its structure is similar to MOPS, except that there is an additional hydroxyl group at the C position in the propane region, which endows MOPSO with unique buffering properties. MOPSO belongs to the well-known "Good's buffer" family, with an effective pH buffering range of 6.2-7.6 and a pKa of 6.95 (25 ℃). This interval precisely covers the optimal reaction pH of the vast majority of clinical diagnostic enzymes (such as oxidases, esterases, peroxidases, etc.), making it an irreplaceable tool in enzymatic assay kits for in vitro diagnostics (IVD). Hubei Xindesheng Material Technology Co., Ltd. produces various types of biological buffer raw materials. MOPSO's core physical and chemical advantages: Strong buffering capacity: It has stable and powerful buffering capacity within the pH range of 6.5-7.5, perfectly adapting to physiological and enzymatic reaction environments; Excellent biocompatibility: no significant toxicity to bioactive components such as enzymes and antibodies, suitable for preparing liquid reagents; Low ion strength: contributes little to the ion strength of the reaction system, reducing interference; High compatibility with metal ions: does not chelate with common metal cofactors such as Ca ² ⁺ and Mg ² ⁺, ensuring the activity of metal dependent enzymes; Good water solubility: easily soluble in water, easy to prepare. 2, Typical application examples of MOPSO in enzymatic assay kits MOPSO has been widely used in various approved enzymatic detection kits, with the following representative cases: 2.1 Cholesterol Determination Kit (Enzyme Method) Cholesterol testing is a core component of blood lipid screening. Multiple cholesterol (CHOL) assay kits use MOPSO as the core buffer component, such as: Cholesterol determination kit (esterase peroxidase method): Reagent 1 contains MOPSO 50 mmol/L, lipoprotein esterase, p-hydroxybenzoic acid, peroxidase; Reagent 2 contains MOPSO 50 mmol/L, 4-aminoantipyrine, and cholesterol oxidase. Total cholesterol (TC/CHOL) assay kit (CE-CO-POD enzyme method): R1/R2 both contain MOPSO buffer, combined with MgCl ₂, DHBS, etc. MOPSO provides a stable pH environment for cholesterol oxidase and cholesterol esterase, ensuring enzyme activity and detection precision. 2.2 Glycated Albumin Assay Kit (Enzymatic Method) Glycated albumin (GA) reflects short-term blood glucose control levels. Representative reagent kits include: GA-L assay kit (enzymatic method) for measuring glycated albumin ratio: GA-R1 contains MOPSO, glycated amino acid oxidase (KAOD), 4-aminoantipyrine, albumin protease, etc; GA-R2 contains MOPSO, peroxidase TOOS. Glycated albumin assay kit (enzymatic method): R1 contains MOPSO 100 mmol/L, KAOD 12500 U/L, catalase; R2 contains MOPSO 100 mmol/L. High concentration MOPSO (100 mmol/L) provides precise pH protection for cascade reactions of multiple enzymes. 2.3 5 '- Nuclease Assay Kit (Enzymatic Method) 5 '- nucleotidase (5' - NT) is an important serum marker for liver and gallbladder diseases. The R1 and R2 of its assay kit (enzymatic method) are based on MOPSO (pH 7.6), combined with nucleotide phosphorylase, xanthine oxidase, peroxidase, etc., to achieve multi enzyme coupling detection. 2.4 Other enzyme assay kits MOPSO is also widely used in reagent kits for homocysteine detection (cyclic enzyme method), alpha amylase detection (IFCC method), low-density lipoprotein cholesterol determination (clearance method), and ultra sensitive C-reactive protein determination (immunoturbidimetric method), fully demonstrating its versatility and reliability. From cholesterol to glycosylated albumin, from 5 '- NT to homocysteine, MOPSO has become an indispensable buffering component in enzymatic assay kits due to its precise buffering range and excellent biocompatibility. In the next article, we will delve into the technical reasons and key indicators for selecting MOPSO for enzyme assay kits. Please stay tuned.

Why choose HEPES sodium salt for the flow cytometry kit The flow cytometry kit has extremely strict requirements for the buffer system, and the reason why HEPES sodium salt has become the preferred buffer in this field is mainly based on the following technical advantages. PH buffering range perfectly adapts to physiological and reaction conditions The effective buffering range of HEPES sodium salt is pH 6.8-8.2, with a pKa of 7.5 (25 ℃), highly matching physiological pH 7.36. The antigen antibody reaction and enzyme catalyzed luminescence reaction of the flow cytometry fluorescence luminescence method have good activity within this pH range. HEPES sodium salt can stabilize the system pH in the optimal range throughout the reaction process, ensuring high reaction efficiency. Not chelating metal ions to ensure the integrity of the reaction system Flow cytometry involves multiple metal ion dependent biological reaction steps, such as antigen antibody binding, enzyme catalyzed reactions, etc. HEPES sodium salt has extremely low metal ion binding ability and does not chelate key cofactors such as Mg ² ⁺, Ca ² ⁺, Mn ² ⁺, etc. In contrast, Tris and phosphate buffering agents have strong metal ion binding abilities, which may interfere with metal ion dependent enzymatic reactions. This characteristic makes HEPES sodium salt an ideal substitute for Tris and phosphates in research involving metal ions. High optical transparency, does not interfere with fluorescence detection The core detection signal of flow cytometry is fluorescence intensity. HEPES sodium salt has extremely low absorption in the visible and ultraviolet regions, and high optical transparency. This means that HEPES sodium salt itself does not produce background fluorescence or absorb target fluorescence signals, ensuring a higher detection signal-to-noise ratio. Strong chemical inertness, does not interfere with immune response HEPES, with its chemical inertness, temperature stability, and strong buffering capacity, is theoretically the best choice for biochemical compatibility. It can minimize the interference of the buffer solution itself on immune and enzymatic reactions, often resulting in better signal-to-noise ratio. This is crucial for pursuing in vitro diagnostic kits with high sensitivity and specificity. Low cytotoxicity, protects bioactive components The flow cytometry kit contains bioactive components such as antibodies, antigens, enzyme markers, etc., which have high requirements for the biocompatibility of the buffer system. The cytotoxicity of HEPES sodium salt is lower than that of traditional buffering agents such as Tris and phosphate, which can better protect the stability and activity of bioactive components in the kit. Suggestions for selection of HEPES sodium salt raw materials For manufacturers of flow cytometry kits, the quality of HEPES sodium salt raw materials directly affects the performance of the finished kit. It is recommended to focus on the following quality indicators when selecting raw materials: quality indicator Suggested requirements Instructions Main content ≥99.0% The higher the purity, the more stable the buffering capacity, and the better the batch Water solubility Completely dissolved, clear and transparent Ensure that the buffer solution is prepared without any residual particles heavy metal heavy metal ≤10ppm Metal ions may interfere with enzymatic reactions and fluorescence signals Absorbance(260nm/280nm) Low absorbance Reflect the content of organic impurities, accurately Dry weight loss ≤0.5% low moisture content, conducive to long-term storage Batch consistency Batch difference ≤ 1% Ensure stable performance of different batches of reagent kits   Hubei Xindesheng Material Technology Co., Ltd. has been specializing in the research and production of biological buffering agents for more than ten years. HEPES sodium salt products are strictly organized and produced according to the ISO 9001 quality management system, with a main content stable at over 99%. The content of metal ions and organic impurities is strictly controlled, which can meet the strict requirements of buffer raw materials in high-end application scenarios such as flow cytometry kits, cell culture media, and biopharmaceuticals. The company also provides various biological buffering agents such as Tris, Bicine, Caps, Mops, Taps, EPPS, and Carbopol series products, committed to providing high-quality core raw materials for the IVD in vitro diagnostic industry. Welcome all reagent kit research and production enterprises to call or write to request technical information and samples.

HEPES sodium salt (CAS number 75277-39-3), chemical name N - (2-hydroxyethyl) piperazine-N '- (2-ethylsulfonic acid) sodium salt, molecular formula C ₈ H ₁ N ₂ NaO ₄ S, is a high-quality zwitterionic biological buffering agent. HEPES sodium salt belongs to the Good's buffer family, with a pKa of 7.5 at 25 ℃ and an effective buffering range of pH 6.8-8.2. This buffer range precisely covers the pH range required for the vast majority of physiological and in vitro diagnostic reactions, making it a core component of buffer systems widely used in fields such as cell culture, biopharmaceuticals, and diagnostic reagents. HEPES sodium salt has multiple unique physicochemical advantages: it has extremely low binding ability to metal ions and does not bind to divalent metal ions such as magnesium, calcium, and manganese; High optical transparency, extremely low absorption in visible and ultraviolet regions, does not interfere with fluorescence detection; Low cytotoxicity, superior to traditional buffering agents such as Tris and phosphate; Good temperature stability and minimal pH variation with temperature. These characteristics give HEPES sodium salt an irreplaceable position in in vitro diagnostic kits involving fluorescence detection. Introduction to Flow Fluorescence Luminescence Method Flow Fluorescence Luminescence Assay is a rapidly developing multi index joint detection technique in the field of in vitro diagnostics (IVD) in recent years. Compared with traditional chemiluminescence single item detection, flow cytometry fluorescence detection can simultaneously detect multiple items and has the advantage of high throughput. During the detection process, the stability of the buffer system directly determines the efficiency of the antigen antibody reaction, the dispersion state of the microspheres, and the intensity and reproducibility of the fluorescence signal. Specific application of HEPES sodium salt in flow cytometry fluorescence assay kit Currently, multiple approved flow cytometry detection kits use HEPES sodium salt buffer as the core component. Here are two representative examples: Squamous cell carcinoma antigen detection kit (flow cytometry fluorescence luminescence method): In the composition of the kit, the microsphere coated antibody reagent (A) includes microspheres coated with SCCA (mouse) antibody and HEPES sodium salt buffer; The biotin antibody reagent (B) contains biotinylated SCCA (mouse) antibodies and HEPES sodium salt buffer. The product needs to be stored in the dark at 2-8 ℃ and has a shelf life of 12 months. Cytokine detection kit (flow cytometry fluorescence luminescence method): This kit is mainly used clinically to monitor the immune status and inflammatory response of the body. HEPES sodium salt buffer is used in multiple components: Microsphere coated antibody reagent (A) contains six types of coated antibody microspheres and HEPES sodium salt buffer; The biotin antibody reagent (B) contains six biotinylated antibodies and HEPES sodium salt buffer; The calibration samples (CAL2-CAL6) and quality control samples (QCL, QCH) are also based on HEPES sodium salt buffer. Typical formula of HEPES sodium salt in buffer solution In practical applications, HEPES sodium salt is often used in combination with other components to construct a complete buffer system. The buffer used for flow cytometry fluorescence detection usually includes a base buffer, a surfactant, and a preservative; The basic buffer includes one or more of Tris buffer, MES buffer, CBS buffer, PBS buffer, and HEPES buffer. The concentration of solutes in the basic buffer is generally 50-100 mM, and the pH value is 7.3-7.5. In the classic applications of flow cytometry and fluorescence detection, common formulations of HEPES buffer include: 10mM HEPES, 150mM NaCl, 3mM EDTA, 0.05% Tween 20, pH 7.0; Or 10mM HEPES, 136mM NaCl, 2.7mM KCl, 2mM MgCl ₂, 5.5mM glucose, 0.1% BSA, pH 7.35. Starting from the physicochemical properties of HEPES sodium salt, this article systematically introduces its specific application scenarios in flow cytometry fluorescence assay kits. The next article will delve into the core technological advantages of HEPES sodium salt in flow cytometry fluorescence detection from the dimensions of pH buffer range, metal ion chelation, optical transparency, chemical inertness, and cytotoxicity. Based on the measured indicators of New Desheng HEPES sodium salt products, key parameters and procurement suggestions for raw material selection will be provided, providing reference for raw material selection and quality control of reagent kit production enterprises.