NEST centrifuge tubes could be commonly used to collect cells and separate biomacromolecules by centrifugation in biochemistry and other biological fields. They can also be used to store photosensitive samples and special chemiluminescence reagent. The 250mL & 500mL centrifuge tubes can process a large number of samples at one time and are suitable for separation and harvest of large cells, supernatants, bacteria, yeast and tissue samples, therefore they are widely used in the field of life sciences and clinical experiments and can meet the requirements of biological analysis.
Feature:
• Non-Pyrogenic, DNase/Rnase free.
250 mL&500 mL Centrifuge Tube
Application:
Centrifuge Tube,Lab Consuable Centrifuge Tube,Lab Clear Centrifuge Tubes,Lab Transparent Centrifuge Tubes Wuxi NEST Biotechnology Co.,Ltd , https://www.nest-biotech.com
Low-temperature hydrogen fluoride industrial test successfully
On March 2nd, the trial production of an industrial test device for hydrogen fluoride using a low-temperature method developed by Zhang Zhixin, a former senior engineer from the Nanchang Industrial Technology Research Institute, was successfully completed. The test facility, located at Nanchang New Chemical Technology Co., Ltd., produced two types of hydrofluoric acid containing 40% and 55% fluorine, respectively. Both products met national standards. This breakthrough in low-temperature hydrogen fluoride technology offers a more energy-efficient, high-yield, and environmentally friendly production process for hydrogen fluoride manufacturers.
Hydrogen fluoride is a fundamental raw material in the fluorine chemical industry. China has over 50 production enterprises with an annual capacity of 700,000 tons. Currently, most domestic and international facilities use sulfuric acid and fluorite powder as raw materials, reacting them in a converter. However, this method has several drawbacks. A portion of the fluorite powder becomes coated with calcium sulfate, preventing full contact with sulfuric acid and leading to incomplete reactions. The leftover fluorite and gypsum form a waste residue known as fluorogypsum, which is both difficult to manage and harmful to the environment. Additionally, the high temperatures (up to 500°C) in the furnace cause sulfuric acid to volatilize, releasing decomposition products and fluorite dust into the hydrogen fluoride gas, complicating subsequent purification steps. There is also a risk of hydrogen fluoride leakage, and the fluorogypsum waste contains residual hydrogen fluoride, further contributing to environmental pollution.
In response to these issues, many hydrogen fluoride companies have adopted foreign technologies in recent years. Although this has increased single-furnace output, challenges such as incomplete reactions, high unit consumption, unstable product quality, severe environmental pollution, and equipment corrosion remain unresolved.
The newly developed low-temperature process still uses sulfuric acid and fluorite powder but introduces a different approach. Fluorite powder is added to a liquid medium that can slightly dissolve calcium fluoride. After stirring, sulfuric acid is introduced to initiate the reaction. The entire process occurs in the liquid phase under controlled heating, maintaining a temperature around 90°C. This ensures a fast and complete reaction. Since it's a liquid-phase reaction, no sulfuric acid decomposer or volatile substances enter the hydrogen fluoride gas, and fluorite dust does not contaminate the gas stream. The formation of calcium sulfate coatings is minimized, allowing for direct and efficient purification of hydrogen fluoride.
Compared to traditional methods, the low-temperature process offers a shorter flow, lower energy consumption, reduced investment, no raw material waste, lower unit costs, and eliminates the emission of "three wastes." It brings significant economic and environmental benefits, marking a major advancement in the hydrogen fluoride industry.
15 mL&50 mL Centrifuge Tubes
• Printed Graduations (with marking area).
• Polypropylene tube and high density polyethylene cap.
• High centrifugal strength up to 12,000xg.
• Flat markable cap with leakproof seal.
• One-hand operation design for the caps provides easy handling.
• Sterilized by E-beam, SAL=10^-6.
• Meets the requirements of analytical level.
• High strength non-toxic materials.
• Raw material comply with USP VI requirements.
• Separation of sediments after chemical reactions for harvest and application.
• Harvest of biomacromolecules, inorganics and organics.
• In biochemistry and other biological fields, usually used to centrifuge and collect a large volume of cells, biomacromolecules and supernatants.
Features:
• Unique structure design of the cap provides double security, further improving the tight seal ability.
• Increased the thickness of conical bottom in order to improve the maximum centrifugal limit.
• Polypropylene tube and high density polyethylene cap.
• Max. centrifugal limit 7000xg.
• Temperature range: -80 o
C~120 o
C.
• Clear scale.
• DNase, RNase and pyrogen free.
• Electron beam sterilization, SAL=10-6.
• Separation of sediments after chemical reactions for harvest and application.
• Harvest of biomacromolecules, inorganics and organics.
• In biochemistry and other biological fields, usually used to centrifuge and collect a large volume of
cells, biomacromolecules and supernatants.