The full-automatic multi-function dry-type nitrogen blowing instrument is a new type of concentrated and constant volume product jointly developed by our company and Zhejiang University of Technology from the perspectives of convenience,, safety, efficiency and stability of users. The product gets rid of the malpractice of the sample pollution caused by water bath heating and volatilization in the conventional market, greatly ensuring the safety and accuracy of the sample, and has the characteristics of unattended, accurate constant volume and mass concentration. It can store multiple groups of data, and realize full-automatic quantitative and batch concentration. The whole process of concentration is mastered by one hand, making the tedious concentration process flexible, efficient and safe.
More info on Whatsapp: 0086 187 6812 9219 [ gena at hzayan dot com ]
1. 7 large LCD touch screen control, and can process 1-12 large capacity samples (maximum 200ml) at the same time.
2. The imported optical sensor is used for precise constant volume, which can reach 0.5ml/1ml/2ml.
3.12 independent constant volume regulating devices are used to ensure the constant volume accuracy of different colors of solvents.
4. When the concentration reaches the preset capacity, the system will automatically stop the nitrogen purging of the corresponding channel and give an alarm all the time. The alarm function can be selected to be off or on.
5. Dry heating shall be adopted to prevent the sample from water and gas pollution and ensure the safety and accuracy of the sample.
6. The heating module is made of pure aviation aluminum, with fast heating speed and good uniformity, and the module can be replaced as you wish.
7. Independent temperature control and gas control shall be adopted for each path of heated sample to ensure that the sample will not be heated continuously in case the personnel forgets to replace it.
8. Adopt an automatic pressure regulating device to ensure the air pressure uniformity of each air circuit.
9.12-position-independent throttle valve control ensures the airtightness of the gas path. Screw type air needle (replaceable) accelerates the concentration rate and greatly saves nitrogen consumption
10.Built-in multi-group data storage function, which can view the running data of the machine in time
11. Adopt a hydraulic double sealing door mirror protection system, and built-in circulating fan system to ensure no volatile leakage.
The automatic quantitative water bath nitrogen blowing instrument is a new type of concentration and constant volume product upgraded by our company from the perspectives of convenience, safety, efficiency and stability of users. The product has the characteristics of unattended, accurate constant volume and mass concentration. It can store multiple groups of data, and realize full-automatic quantitative and batch concentration. The whole process of concentration is mastered by one hand, making the tedious concentration process flexible, heart-saving, efficient and safe. More info on Whatsapp 0086 187 6812 9219 [ gena at hzayan dot come ] 1. 7 large LCD touch screen control, and can process 1-12 large capacity samples (maximum 200ml) at the same time. 2. The imported optical sensor is used for precise constant volume, which can reach 0.5ml/1ml/2ml. 3.12 independent constant volume regulating devices are used to ensure the constant volume accuracy of different colors of solvents. 4. When the concentration reaches the preset capacity, the system will automatically stop the nitrogen purging of the corresponding channel and give an alarm all the time. The alarm function can be selected to be off or on. 5.Dry heating shall be adopted to prevent the sample from water and gas pollution and ensure the safety and accuracy of the sample. 6.The heating module is made of pure aviation aluminum, with fast heating speed and good uniformity, and the module can be replaced as you wish. 7. Adopt an automatic pressure regulating device to ensure the air pressure uniformity of each air circuit. 8.12-position-independent throttle valve control ensures the airtightness of the gas path. Screw type air needle (replaceable) accelerates the concentration rate and greatly saves nitrogen consumption 9.Built-in multi-group data storage function, which can view the running data of the machine in time 10. Adopt a hydraulic double sealing door mirror protection system, and a built-in circulating fan system to ensure no volatile leakage.
1. Rapid neutralization of static charges 2. Large coverage of ion airflow 3. Wide range of airflow speed regulation 4. Dedicated cleaner for ion generating electrode 5. Ionization indicator 6. Special design on cold air & heater 7. Reliable grounding protection
others nameï¼?Nitrocotton; Cotton body collodion; Low nitrogen nitrocellulose 1.Nitrocellulose, also known as nitrocellulose, cotton body collodion, etc., is a nitrate ester, white or slightly yellow cotton wool, soluble in acetone. It is the product of esterification of cellulose and nitric acid. Cellulose nitrate is produced by esterifying refined cotton with concentrated nitric acid and concentrated sulfuric acid. 2.Casï¼?9004-70-0 3. Appearance: White or yellowish cotton wool 4.useï¼?Nitrocellulose has two main applications, military and civilian. The military part mainly focuses on the production of weapons, explosives and explosives, and implements the management of military products. The civil part is used in paint, celluloid, artificial fiber, film ink, cosmetics and other fields. Cellulose nitrate is a white fibrous polymer that is resistant to water, dilute acids, weak alkalis and various oils. Insoluble in water, soluble in acetone, ethyl ether ethanol mixture. Easy to change color under the sun, extremely flammable, smoke-free, instant release of a lot of gas. Different degrees of polymerization, its strength is also different, but are thermoplastic materials. It changes color easily in sunlight and burns easily. In the production and processing, packaging, storage and transportation, sales, use should pay attention to safety. Main use (1) High nitrogen content commonly known as fire cotton, used to make smokeless gunpowder; Low nitrogen content commonly known as collodion, used to manufacture spray paint, artificial leather, film, plastic and so on. (2) Used for making cultural and educational supplies, daily necessities, instrument signs, etc (3) Used in ink, leather, various nitrocellurocelluloses, rubber caps, typing wax paper, etc (4) For the production of cultural and educational supplies, daily necessities, instrument signs, etc., for ink, leather, various nitro paints, etc., for the pharmaceutical industry, photographic negatives, photographic negatives and leather manufacturing (5) celluloid, announced by the European Union on October 26, 2006, banned for the manufacture of toys.
CAS 75-05-8 HS code 2926909090 Packaging: 160kg*80drums,12.8ton/20'FCL; 160kg*152drums,24.32ton/40'FCL; 160kg*156drums,24.96ton/40'FCL. Acetonitrile is an organic compound with the molecular formula CH3CN or c2h3n. It is a colorless liquid, highly volatile, with a special smell similar to ether, excellent solvent performance, and can dissolve a variety of organic, inorganic and gaseous substances. It has certain toxicity and is infinitely miscible with water and alcohol. Acetonitrile is an important organic intermediate, which can undergo typical nitrile reactions and is used to prepare many typical nitrogen-containing compounds. Acetonitrile can be used as a solvent for the synthesis of vitamin A, cortisone, carboamine drugs and their intermediates, and also as an active medium solvent for the manufacture of vitamin B1 and amino acids. It can replace chlorinated solvent. It is used in vinyl coating, fatty acid extractant, alcohol denaturant, butadiene extractant and solvent of acrylonitrile synthetic fiber. It is also used in fabric dyeing, lighting, perfume manufacturing and photosensitive material manufacturing. Chemical analysis and instrumental analysis Acetonitrile is an organic modifier and solvent used in thin layer chromatography, paper chromatography, spectroscopy and polarographic analysis in recent years. Since high-purity acetonitrile does not absorb ultraviolet light at 200nm ~ 400nm, an application being developed is as a solvent for high-performance liquid chromatography HPLC, which can make the analytical sensitivity as high as 10-9 levels. Intermediate of synthetic medicine and pesticide Acetonitrile can be used as an intermediate in the synthesis of various medicines and pesticides. In medicine, it is used to synthesize a series of important pharmaceutical intermediates, such as vitamin B1, metronidazole, ethambutol, aminopteridine, adenine and antitussive; In pesticides, it is used to synthesize pyrethroid insecticides, acetaminophen and other pesticide intermediates. Semiconductor cleaning agent Acetonitrile is an organic solvent with strong polarity. It has good solubility in grease, inorganic salt, organic matter and polymer compounds. It can clean grease, wax, fingerprints, corrosive agent and flux residues on silicon wafers. Therefore, high purity acetonitrile can be used as semiconductor cleaner.
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1351 Clear glass Desiccator with porcelain plate Product Description It is a non-vacuum desiccator, and therefore has no stopcock. The sturdy glass top fits easily on the thick lip of the desiccator, and features a knob handle for removing or replacing the lid. The lips of both the lid and the desiccator itself are ground glass, and should be greased with petroleum jelly before use. In addition to helping create an air-tight seal, the grease also helps cushion the lid when it is set down in place. To help prevent damage from being set down too forcefully, the lid can be carefully slid on, or off, of the desiccator once greased. Desiccators can be used, though not exclusively, for preserving moisture-sensitive items, protecting hygroscopic or water-reacting chemicals, as well as removing traces of water from samples that need drying. There are 8 sizes available : 120 mm desiccator, 150 mm desiccator, 180 mm desiccator, 210 mm desiccator, 240 mm desiccator, 300 mm desiccator, 350 mm desiccator, 400 mm desiccator. Material: Glass Color:clear Key Product Features : 1. Removable Lid 2. Heavy duty 3. With a procelain plate 1352 Amber glass Desiccator with porcelain plate Product Description There are 8 sizes available : 120 mm desiccator, 150 mm desiccator, 180 mm desiccator, 210 mm desiccator, 240 mm desiccator, 300 mm desiccator, 350 mm desiccator, 400 mm desiccator. Material: Glass Color:amber Key Product Features : 1. Removable Lid 2. Heavy duty 3. With a procelain plate 1354 Clear glass Vacuum Desiccator with porcelain plate Product Description Desiccators are sealable enclosures containing desiccants used for preserving moisture-sensitive items such as cobalt chloride paper for another use. A common use for desiccators is to protect chemicals which are hygroscopic or which react with water from humidity. The contents of desiccators are exposed to atmospheric moisture whenever the desiccators are opened. It also requires some time to achieve a low humidity. Hence they are not appropriate for storing chemicals which react quickly or violently with atmospheric moisture such as the alkali metals; a glovebox or Schlenk-type apparatus may be more suitable for these purposes. Desiccators are sometimes used to remove traces of water from an almost-dry sample. Where a desiccator alone is unsatisfactory, the sample may be dried at elevated temperature usingAbderhalden's drying pistol. There are 7 sizes available : 150 mm desiccator, 180 mm desiccator, 210 mm desiccator, 240 mm desiccator, 300 mm desiccator, 350 mm desiccator, 400 mm desiccator. Product Features : Various specifications; Preferential price;High quality Material: Glass Color:clear
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