Negotiable

Category: Chemicals/Laboratory Reagents/Other Chemical Reagents

Company: Hubei new DE sheng material science and technology co., LTD.

Product Description: The characteristics of CHAPS CHAPS (CAS75621-03-3), CAS number: 75621-03-3 | Molecular formula: C 32 H 58 N 2O 7 S, full chemical name 3- [(3-Cholamidopropyl) dimethylo] -1-propanesulfonate, is a zwitterionic surfactant widely used in protein preparation, dissolution, and separation. It is a white powder solid at room temperature, with good water solubility (50 mg/mL), but has hydrophobicity at the molecular level. When CHAPS is dissolved in water, its aqueous solution appears colorless to light yellow transparent. The application of CHAPS CHAPS is a non denaturing detergent used to dissolve membrane proteins and disrupt protein-protein interactions. The structure of this surfactant combines the useful properties of sulfobetaine type and bile salt detergent 2. Some studies have shown that compared to NP-40 and Triton X-100, CHAPS can mildly and effectively destroy the nuclear membrane, dissolve membrane proteins, and disrupt protein-protein interactions (PPI). CHAPS can protect the natural state or conformation of proteins, thereby maintaining their activity and function. Therefore, CHAPS is widely used in biological science research fields such as cell lysis and protein purification. For proteomics: In the preparation of TMT samples for mammalian cell and tissue analysis, the use of CHAPS lysis buffer can avoid accidental protein degradation during protein digestion and improve protein extraction efficiency. CHAPS has been successfully used to dissolve endometrial proteins and receptors, and has the ability to maintain protein activity. Proteins can also be iodized in the presence of CHAPS. Precautions for using CHAPS When preparing any solution using CHAPS, please try not to shake or stir vigorously. Its storage conditions are 2-8 ℃ refrigeration 2. Before adding CHAPS (0.5% w/v), the remaining DNA contamination was degraded by incubating with Benzonase nuclease at 37 ° C. Remove crude lysate from cell fragments by centrifugation (3000 g, 10 minutes). With the increasing awareness of chemical safety in the global market, more and more users are searching for CHAPS without DMF (dimethylformamide) for their applications. As a leading CHAPS manufacturer, Desheng has been investing in its research and development resources to develop solutions to remove DMF from its CHAPS manufacturing process. So far, the results have been satisfactory. If you are looking for a CHAPS supplier, please contact Desheng professional customer service! more>

Negotiable

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: Hubei new DE sheng material science and technology co., LTD.

Product Description: Tris buffer is a commonly used biochemical and molecular biology laboratory reagent, composed of Tris (trimethylaminomethane) and acidic substances (such as hydrochloric acid), which can effectively maintain the pH value of the solution within the acid-base range. The stability and storage time of the buffer solution are crucial factors that must be considered in the experiment. So let's talk in detail about the storage time of Tris and provide relevant suggestions to ensure the quality and effectiveness of the buffer solution. 1、 Storage time of buffer solution Tris buffer can maintain relatively stable properties at room temperature, and it is generally recommended to store at 4 ° C. In addition, the storage time may vary depending on different preparation methods and formulas. Generally speaking, Tris buffer solution that has been properly prepared and sterilized can be stored for several months to one year under refrigeration conditions. However, it should be noted that its storage time may also be affected by other factors, such as the pH value of the solution, temperature, light exposure, and contamination. 1、 Storage time of buffer solution Tris buffer can maintain relatively stable properties at room temperature, and it is generally recommended to store at 4 ° C. In addition, the storage time may vary depending on different preparation methods and formulas. Generally speaking, Tris buffer solution that has been properly prepared and sterilized can be stored for several months to one year under refrigeration conditions. However, it should be noted that its storage time may also be affected by other factors, such as the pH value of the solution, temperature, light exposure, and contamination. 2、 Determine whether the buffer solution has failed Before use, the appearance and color of the buffer should be checked. If there is turbidity, sedimentation, or color change, it indicates that the buffer may have deteriorated. Additionally, pH test strips or pH meters can be used to measure the pH value of the buffer solution, ensuring that it remains within the desired range. At the same time, some control experiments should be conducted before use, such as electrophoresis experiments or PCR reactions, to ensure that the buffer can still provide the required function and effect. 3、 Optimization and preservation of buffer solution In order to extend the storage time of Tris, sterile technology can be used to prepare buffer solution, avoid contamination during the preparation process, and divide the solution into small containers to avoid frequent opening of the main storage container, in order to reduce contact with air and pollutants. Close the container promptly after use to prevent the entry of oxygen and moisture, and avoid prolonged exposure to room temperature or high temperature environments. Tris buffer is a commonly used pH regulating reagent in the laboratory, which can maintain relatively stable properties and functions under correct storage conditions. If there are any changes during use, a new buffer should be prepared to ensure the accuracy and reliability of the experiment. In addition, it is necessary to regularly check and update the inventory of buffer solution to avoid using expired buffer solution. As a high-quality manufacturer of buffering agents, Desheng's products are in the original powder state, which can help customers effectively store, facilitate transfer and transportation. At the same time, the preparation is simple, ready to use, effectively saving time and cost. If you are interested, please feel free to contact us for purchase at any time! more>

Negotiable

Category: Others

Company: Hubei new DE sheng material science and technology co., LTD.

Product Description: Since the outbreak of the new coronavirus, the virus preservation solution has played a major role. First, nasal and throat swabs are used for sample sampling, and the samples are placed in a sampling tube with virus preservation solution for sample protection, which improves the accuracy of nucleic acid detection. The virus preservation solution is a solution medium used for virus sampling, transportation, preservation, and detection. It is added to the virus sampling tube. What kind of virus preservation solution is added? There are two types of virus preservation solutions, inactivated and non-inactivated. There are many types of virus preservation solutions on the market. The following Desheng editor briefly introduces several principles for the selection of virus preservation solutions. Non-inactivated preservation solution: The non-inactivated type does not contain lysis solution. On the basis of Hank's, it is added with BSA (bovine serum albumin) amino acids, vitamins and other nutrients required by the virus, which can maintain the activity of the virus in a wide temperature range and maximize the retention The originality of the sample can be used for virus nucleic acid extraction and detection, virus cultivation and isolation. Features of non-inactivated preservation solution: 1. The virus can remain active and can be used for detection or virus isolation; 2. It has no inhibition on subsequent nucleic acid amplification and can be matched with direct amplification reagents; 3. After adding the swab, it should be stored in the refrigerator, and the main ingredients should be tested as soon as possible. Inactivation preservation solution: The inactivation preservation solution fully mixes the collected sample with the virus lysis solution and the virus nucleic acid preservation solution to achieve the inactivation of the virus in the sample, while effectively ensuring the integrity of the virus nucleic acid in the sample. The collected sample can be kept at room temperature. Transportation and long-term storage under conditions. The stored viral RNA samples can be widely used in genetic testing, enzyme-linked immunoassay (ELISA), PCR testing, etc. The inactivated preservation solution can be divided into guanidine-containing and non-guanidine-containing solutions. I believe that after reading the above explanation, there is a more basis for choosing the correct and suitable preservation solution. Desheng is a manufacturer of virus preservation solution. It can provide two types of preservation solutions, inactivated and non-inactivated, and can accept customized samples provided by customers. It can also provide disposable virus sampling tubes and nasopharyngeal swabs, etc., to provide customers with one-stop service. If you need it, you can click on the official website for consultation or directly contact our professional sales staff. more>

Negotiable

Category: Chemicals/Heterocyclic Compounds/Aminopyridine

Company: Hubei new DE sheng material science and technology co., LTD.

Product Description: 1. Basic nature The application of acridine compounds in chemiluminescence detection has the following advantages: Low background luminescence and high signal-to-noise ratio; Less interference factors in luminescence reaction; The light release is fast and concentrated, the luminous efficiency is high, and the luminous intensity is large; It is easy to link with protein and the photon yield does not decrease after linking; The markers are stable (storable for several months at 2-8C), they have good solubility in water, are stable and are not easily hydrolyzed. The chemiluminescence of acridine compounds does not require a catalyst and can emit light in a dilute alkaline solution containing H2O2. The luminescence of the compound is flash type. After adding the luminescence starter, the emitted light intensity reaches the maximum in about 0.5s, and the half-life is about 1s. Acridine compounds are used in chemiluminescence immunoassay (CLIA). That is, the antibody or antigen is labeled with acridine salt, and HNO3+H2O2 and NaOH are used as the luminescence priming reagent. Some add Triton X-100, CTAC, Tween-20 and other surfactants to the luminescence priming reagent to enhance luminescence. Acridine compounds are commonly used in environmental analysis, immunoassay, enzyme activity analysis and labeling oligonucleotide fragments, etc., and are used clinically to determine bacteria, viruses or other disease markers. 2. Acridine ester DMAE-NHS or NSP-DMAE-NHS Acridine ester DMAE-NHS or NSP-DMAE-NHS is an ideal chemiluminescence immunoassay labeling substance with good luminescence performance. Compared with the widely used acridinium ester AE-NHS, the luminescence intensity of the acridinium ester DMAE-NHS or NSP-DMAE-NHS and antibody (Ab) conjugates is higher, and the luminescence dynamics of the two are very similar. Both are flash-type luminescence and both reach the highest at 0.4s, but the thermal stability of DMAE-NHS or NSP-DMAE-NHS is significantly higher than that of AE-NHS. AE-NHS is only stable in acidic solutions, when pH>6.3 It is easy to hydrolyze later, but DMAE-NHS or NSP-DMAE-NHS is not. For example, at room temperature, it is very stable in a PB buffer with a pH of 7.0. After 16 days, the luminescence activity is only reduced by 3.6%. Their luminescence thermal stability with protein conjugates is similar to this. The acridinium ester DMAE-NHS or NSP-DMAE-NHS is easy to label biomolecules and the luminescent activity and biological activity of the labeled compound are stable. The synthesized luminescent label is applied to chemiluminescence immunoassay with high sensitivity and other ideals. For example, the minimum detection limit of TSH is 0.007 mIu/L. Therefore, the acridinium ester DMAE-NHS or NSP-DMAE-NHS has good application value for the research of chemiluminescence analysis and chemiluminescence immunoassay. 3. Acridine Sulfonamide NSP-SA-NHS Acridine sulfonamide is a very effective more>

Negotiable

Category: Chemicals/Alcohols/Other Alcohols

Company: Wuxi High-Mountain Hi-tech Development Co., Ltd.

Product Description: more>

Negotiable

Category: Chemicals/Amines/Other Amines

Company: 天津市精强化工有限公司

Product Description: CAS NO:EC NO:Molecular Formula:Molecular Weight:Synonyms:;Chrome Deep Yellow 124;Molecular Structure:CAS NO:EC NO:Molecular Formula:Molecular Weight:Synonyms:;Chrome Zinc Yellow 109;Molecular Structure:CAS NO:EC NO:Molecular Formula:Molecular Weight:Synonyms:Molecular Structure:CAS NO:26896-20-8EC NO:248-093-9Molecular Formula:C10H20O2Molecular Weight:172.2646Synonyms:;Neodecanoic acid;2,2,3,5-Tetramethylhexanoic acid;2,4-Dimethyl-2-isopropylpentanoic acid;2,5-Dimethyl-2-ethylhexanoic acid;Caswell No. 365A;EPA Pesticide Chemical Code 097501;Topper 5E;Wiltz 65;2-ethyl-2,5-dimethylhexanoic acid;tert-Decanoic acid;Molecular Structure:CAS NO:1300-73-8EC NO:215-091-4Molecular Formula:C8H11NMolecular Weight:121.1796Synonyms:;Dimethylaniline mixture;Xylidines;DMA mixture;Dimethylaniline;Mix Xylidine;Xylidine-m;p mixture; Molecular Structure: more>

$4500

Category: Chemicals/Food & Feed Additives/Food Quality Improvers

Company: Zhengzhou yizeli industrial co., ltd

Product Description: Characters: Ivory or straw yellow powder or granular solid which is easily soluble in hot water. It is a non-ionic emulsifier with HLB value of 8-10. Applications: It can produce strong effects such as emulsification, dispersing and aging resistance, so it can be used as good emulsifier and dispersant. (1) It can increase the springiness, toughness and gas-holding capability of dough effectively, reduce its softening degree, increase volume of bread and steam bread, and improve their organization and structure. (2) It can react with amylose to delay and prevent the food aging. (3) It can be used in cream to make it smoother and finer. (4) It can be used in butter and concentrated butter to prevent oil separating and enhance its stability. (5) It can also be sued in sugar, syrup and spices. (6) It can be used in non-dairy creamer to make the emulsion homogeneous , stable and supple in mouth. Usage: (1) Put this product in warm water at about 60℃ to get paste shaped substance, and then use it in appropriate proportion. (2) Dissolve this product in oils or fats homogeneously before further processing. (3) Directly mix it with flour for use. Recommended Addition Amount: Addition maximum is 1.0% for raw dried flour products and raw wet products, while 5.0% for non-dairy creamers. The addition amount can be changed based on production need for cream and fermented milk. Technical Index Acid value (Calculated by KOH) / (mg/g) 55-80 Saponification value (Calculated by KOH) / (mg/g) 300-425 Total tartaric acid(W/%) 10-40 Total glycerol(W/%) 11-28 Total acetic (W/%) 8-32 Free glycerol(W/%) ≤2.0 Ignition residue (W/%) ≤0.5 Pb/(mg/kg) ≤2 Packaging： Aluminized bag vacuum packing with nitrogen inside. Net weight:20KG/CTN(5 KG *4) Storage & Transportation: Sealed and stored in the low temperature, dry, cool and well-ventilated place, in order to prevent from moisture and caking. Strictly forbid storing and transporting with materials that is explosive, combustible or deleterious. The shelf life is 12 months. more>

$4.3~4.5 $/kg

Category: Chemicals

Company: Zhengzhou Yizeli Industrial Co.,Ltd

Product Description: Food grade emulsifier, used in bread, pastry, margarine, non-dairy creamer. Improves dough volume, texture and shelf life. CAS No.: 100085-39-0. more>

$43

Category: Others

Company: Hainan Shidian Technology Co., Ltd.

Product Description: Product OverviewThe WE-T20 long-range electronic tag is an electronic tag specially designed for positioning personnel or items. The electronic tag regularly wirelessly broadcasts its tag ID information, with a maximum transmission distance of up to 100 meters. The tag reader can not only receive the ID information of nearby tags, but also calculate the distance between the tag and the reader based on the field strength of the wireless signal. Through comprehensive analysis of data received by multiple readers, the exact location of the tag can be determined.Fix the electronic tag on the surfaces of周转箱, material boxes, forklifts and other items, and install several readers around the indoor space or on the ceiling, so as to realize real-time monitoring of the indoor item positions and facilitate item tracking and searching. Wear the electronic tag on personnel, and you can realize dynamic and real-time attendance checking for personnel. When used in conjunction with a handheld reader, the electronic tag can conveniently realize item searching and personnel roll call.Application FieldsThe positioning electronic tags are widely used in many application fields such as intelligent warehouse management, logistics tracking, indoor navigation, personnel management and so onProduct FeaturesSend tag information once per second, with a working time of no less than 3 years.Wireless transmission power is 5dBm, and the transmission distance is no less than 80 meters.The wireless frequency band adopts the 4GHz global unlicensed microwave frequency band, no application and fee are required.It has low battery voltage reminder, and the tag can continue to be used for 1 month after low voltage occurs.The shell is made of ABS engineering plastic, with a protection rating of IP67, and can be immersed in water for a short time.External dimensions: cuboid 60mm*37mm*15mmWorking temperature: -20℃ ～60℃ more>

$面议

Category: Transportation/Ships & Boats/Other Boats & Watercraft

Company: Jinzhou Anxing Electric Power Appliances Distribution Department

Product Description: Hebei Five-Star "Werte·Baryonyx" WX-8 Emergency RescueyuanHovercraft Can "fly" on land and water, gallop across all water areas and terrains The WX-8 emergency rescue yuan hovercraft is an amphibious hovercraft for China's professional emergency rescue and disaster relief industry. It has the ability to travel quickly, efficiently and maneuverably in various complex terrain environments such as water, flood rapids, urban waterlogging, ice surfaces, tidal flats, beaches, swamps and land. It aims to quickly respond to the needs of emergency rescue, flood control and disaster relief, water rescue and rescue in complex regional environments, rescue trapped personnel in the first time, and quickly transport rescue equipment, rescue supplies and rescue personnel in harsh environments. Multi-functional and multi-purpose Widely applicable to: flood control and disaster relief, earthquake and mudslide rescue, emergency rescue, field emergency support, water and ice surface rescue, urban waterlogging, public security patrol, hydrological survey, fishery law enforcement, and other fields and industries. Long-lasting battery life The total fuel tank capacity of this ship type is 120L, of which the main fuel tank capacity is 80L and the auxiliary fuel tank capacity is 40L, ensuring that the endurance time is no less than 3 hours. Stable and reliable operation in severe weather It adopts an advanced mechanical control system, is equipped with a forced circulation water cooling system and an engine preheating system, to ensure that the engine operates stably and reliably in various severe weather conditions. Excellentxiu buoyancy performance When the engine stops working, it can still stably berth on the water or tidal flat without sinking, ensuring navigation safety. Segmented skirt design It adopts a segmented skirt design, and uses PVC mesh fabric and TPU adhesive materials. It not only improves the adaptability and durability of the hovercraft, but also ensures that it can work stably in a wide temperature range from -40℃ to 40℃. Customized onboard equipment Can be equipped with emergency equipment modules and rescueyuan equipment as required Can be equipped with emergency equipment modules and rescue yuan equipment: Emergency drainage pump stations, generator sets, communication and command systems, field water purification devices, unmanned remote control life-saving robots, water rescue floating boards, combined long-distance multi-functional rescue poles, equipped with search lights, fog lights, sidelights, warning lights, loudspeakers, basic rescue and life-saving equipment to meet the carrying capacity requirements. Amphibious to conquer all regional terrains Scope of application: Flood control and disaster relief emergency rescue, power emergency repair, fire fighting, urban waterlogging, municipal drainage, geological survey, disaster rescue, earthquake rescue, medical assistance, hydrological detection, public security police, pipeline inspection, forest security, fire investigation, snowfield support, grassland fire prevention more>

$100

Category: Others

Company: Hebei Wuxing Power Equipment Co., Ltd.

Product Description: Parameters of Route Patrol Flood Rescue UAVParameters of Route Patrol Flood Rescue UAV According to Needs·Customized ConfigurationCustomizable On-board EquipmentEquipment modules and rescue supplies can be carried according to actual needsSatellite Communication Equipment, Window Breaker, Foam Gun, Warning Light, Ad-hoc Network Equipment, Detection Equipment, Four-light Pod, Integrated Searchlight and Megaphone, Fire-spraying Equipment, Weapon Mount, Drop Ink Device, Throwing Equipment, On-board De-icer, Lighting Equipment, Fire Extinguishing Bomb, On-board Net Gun.Emergency Forest Fire Prevention Reconnaissance and Firefighting Unmanned Helicopter.The emergency unmanned helicopter series includes: rescue unmanned helicopters, high-rise urban fire-fighting unmanned helicopters, flood control and disaster relief unmanned helicopters, water rescue unmanned helicopters, forest and grassland fire-fighting unmanned helicopters, communication unmanned helicopters, command unmanned helicopters, fire rescue unmanned helicopters, power emergency repair unmanned helicopters, aerial disaster investigation and verification unmanned helicopters and so on.It can carry a variety of on-board equipment such as visible light, far-infrared and laser rangefinder three-light pods, dual-spectrum pan/tilt, intercom relay modules, fire extinguishing bomb throwing systems, fire extinguishing bomb aiming devices, megaphones and others, which can effectively realize functions such as fire warning, real-time fire extinguishing, on-site command, relay communication, fire scene tracking, megaphone deployment and more.Depending on the configured equipment, the UAV can be widely used in various fields including search and rescue, firefighting, high-rise urban building fire extinguishing, power emergency repair, aerial patrol of oil and gas pipelines, disaster investigation, shooting and evidence collection, search and reconnaissance, disaster relief communication command, route patrol, maritime anti-smuggling, marine disaster monitoring, aerial object detection, environmental monitoring, geographic mapping and more. more>

$100

Category: Safety & Security/Life-Saving Equipment/Flood Control Equipment

Company: Hebei Wuxing Power Equipment Co., Ltd.

Product Description: Specifications, Main Technical Parameters and Complete User Guide of Flood Rescue and Emergency Rescue UAVsSpecifications, Main Technical Parameters and Complete User Guide of Flood Rescue and Emergency Rescue UAVsRush to the rescue scene quickly to improve the efficiency of emergency rescue and disaster reliefDisaster relief supplies thrower, emergency rescue and disaster relief lighting, loudspeakerProduct parameters:Overall dimensions: 2300×620×870mmEndurance time: >6 hoursPayload: 30—80kgFully autonomous flight control system, 360x zoom (30x optical +12x electronic zoom) + 8x electronic zoom thermal imaging, 50km integrated image and data radio, supplies thrower, searchlight, laptop ground station more>

$37.5

Category: Construction & Building Materials/Glass/Borosilicate Glass

Company: Yiwu Youpinhui Market Development Co., Ltd.

Product Description: Borosilicate glass more>

Negotiable

Category: Construction & Building Materials/Glass/Borosilicate Glass

Company: Yiwu Youpinhui Market Development Co., Ltd.

Product Description: Borosilicate glass; Capacity: 630ml*2 + 500ml*3 more>

Negotiable

Category: Chemicals/Amines/Other Amines

Company: 天津盛通泰化工有限公司

Product Description: CAS NO:1300-73-8EC NO:215-091-4Molecular Formula:C8H11NMolecular Weight:121.1796Synonyms:;Dimethylaniline mixture;Xylidines;DMA mixture;Dimethylaniline;Mix Xylidine;Xylidine-m;p mixture; Molecular Structure: more>

Negotiable

Category: Chemicals/Carboxylic Acid Derivatives/Esters

Company: 山东金文化工有限公司

Product Description: CAS NO:25584-83-2EC NO:247-118-0Molecular Formula:C6H10O3Molecular Weight:130.1418Synonyms:;Hydroxypropyl acrylate,mixture of isomers;Acrylic acid hydroxypropyl ester;BISOMER HPA;2-hydroxypropyl prop-2-enoate;1-hydroxypropan-2-yl prop-2-enoate;1-hydroxypropyl prop-2-enoate;Hydroxypropyl acrylate;Molecular Structure: more>

Negotiable

Category: Chemicals/Paints & Coatings/Architectural Coatings

Company: 苏格仕涂料有限公司

Product Description: CAS NO:EC NO:Molecular Formula:Molecular Weight:Synonyms:Molecular Structure: more>

Negotiable

Category: Chemicals/Chemical Intermediates/Intermediate Compounds

Company: Hangzhou Aolishen Chemical Co., Ltd.

Product Description: CAS NO:16219-75-3EC NO:240-347-7Molecular Formula:C9H12Molecular Weight:120.1916Synonyms:;5-ethylidene-8,9,10-trinorborn-2-ene;5-ethylidenebicyclo(2.2.1)hept-2-ene;(5E)-5-ethylidenebicyclo[2.2.1]hept-2-ene;Ethylidene Norbornene;5-Ethylidenebicyclo[2.2.1]hept-2-ene;Molecular Structure: more>

Negotiable

Category: Chemicals/Carboxylic Acid Derivatives/Esters

Company: 山东朝岳化工有限公司

Product Description: CAS NO:25584-83-2EC NO:247-118-0Molecular Formula:C6H10O3Molecular Weight:130.1418Synonyms:;Hydroxypropyl acrylate,mixture of isomers;Acrylic acid hydroxypropyl ester;BISOMER HPA;2-hydroxypropyl prop-2-enoate;1-hydroxypropan-2-yl prop-2-enoate;1-hydroxypropyl prop-2-enoate;Hydroxypropyl acrylate;Molecular Structure: more>

Negotiable

Category: Chemicals/Carboxylic Acid Derivatives/Esters

Company: Changzhou Hickory Chemical Co.,Ltd. (Changzhou Tianma Group Co., Ltd.)

Product Description: CAS NO:25584-83-2EC NO:247-118-0Molecular Formula:C6H10O3Molecular Weight:130.1418Synonyms:;Hydroxypropyl acrylate,mixture of isomers;Acrylic acid hydroxypropyl ester;BISOMER HPA;2-hydroxypropyl prop-2-enoate;1-hydroxypropan-2-yl prop-2-enoate;1-hydroxypropyl prop-2-enoate;Hydroxypropyl acrylate;Molecular Structure: more>