Nitrogen is used in a variety of laboratory applications, including:
Preservation: Nitrogen is used to preserve biological specimens, such as cells, tissues, and microorganisms. The gas helps to slow down the decomposition process, ensuring that samples remain fresh for analysis.
Reactions: Nitrogen is used as an inert gas in chemical reactions to prevent oxidation and other unwanted reactions. In many cases, nitrogen is used to displace oxygen from a reaction vessel to create an oxygen-free environment.
Chromatography: Nitrogen is used as the carrier gas in gas chromatography, a technique used to separate and analyze compounds in complex mixtures.
Cooling: Nitrogen is used to cool samples in cryogenics and superconductivity research.
Analytical Instruments: Nitrogen is used as a sweeping gas to prevent contamination in various analytical instruments, such as mass spectrometers and infrared spectrometers.
How a Laboratory Gas Nitrogen Generator Works:
A laboratory gas nitrogen generator uses a process known as pressure swing adsorption (PSA) to generate nitrogen gas from atmospheric air. The process involves filtering air through a bed of adsorbent material, such as zeolite or activated carbon, to remove impurities, such as oxygen and moisture. The purified air is then compressed and sent to a second adsorbent bed, where it is separated into nitrogen and other gases. The nitrogen is then collected and stored for use in the laboratory.
The PSA process works by utilizing the different adsorption properties of nitrogen and other gases. The adsorbent material preferentially adsorbs oxygen and other impurities, allowing the nitrogen to pass through to the outlet. The process is continuous, with the adsorbent bed cycling between a pressurized and depressurized state to remove and release the adsorbed impurities.
A laboratory gas nitrogen generator is a vital tool for many laboratory applications, providing a reliable source of nitrogen gas. The use of nitrogen in laboratory settings has numerous benefits, including preservation, reactions, chromatography, cooling, and analytical instruments. The PSA process used in nitrogen generators is a simple, efficient, and cost-effective method for generating nitrogen gas from atmospheric air.
High Purity Air(Zero Air) Generator
A zero air laboratory generator is a device used to produce a high-purity, low-level hydrocarbon-free air stream for use in various laboratory applications. The term "zero air" refers to air that has been purged of all contaminants, including hydrocarbons, moisture, and other impurities, to produce a pure and reliable source of air for laboratory use.
Zero air is used in a variety of laboratory applications, including:
Calibration: Zero air is used as a reference gas in the calibration of various analytical instruments, such as gas chromatographs, mass spectrometers, and infrared spectrometers.
Reactions: Zero air is used as an inert gas in chemical reactions to prevent oxidation and other unwanted reactions. In many cases, zero air is used to displace oxygen from a reaction vessel to create an oxygen-free environment.
Environmental Monitoring: Zero air is used in environmental monitoring to measure the presence of volatile organic compounds (VOCs) in the atmosphere.
Combustion Analysis: Zero air is used as the carrier gas in combustion analysis, a technique used to measure the combustion efficiency of fuels.
Trace Analysis: Zero air is used as a background gas in trace analysis, a technique used to measure low levels of impurities in a sample.
How a Zero Air Laboratory Generator Works:
A zero air laboratory generator typically uses a combination of filtration, compression, and catalytic oxidation processes to produce a high-purity air stream. The process starts with the purification of incoming air through a series of filters, including high-efficiency particulate air (HEPA) filters and activated carbon filters, to remove impurities, such as dust, moisture, and hydrocarbons. The purified air is then compressed and sent through a catalytic oxidation process, where any residual hydrocarbons are burned off to produce a zero air stream.
The zero air generator is equipped with various safety features to ensure the quality and reliability of the produced air stream. For example, it may include a catalytic oxidation monitor to measure the efficiency of the catalytic oxidation process and an oxygen sensor to monitor the oxygen level of the produced air.