The application of nitrogen as a "carrier gas" in laboratory analysis and testing instruments.

Introduction

One of the most common applications of nitrogen in laboratories is to provide a stable inert gas environment for analytical instruments such as gas chromatographs, liquid chromatography-mass spectrometry (LC-MS), and liquid chromatography-tandem mass spectrometry (LC-MS/MS). As an inert gas, nitrogen does not react with most substances, making it an ideal protective atmosphere for detectors, enhancing their sensitivity and improving the accuracy of trace component measurements. In addition to serving as a protective atmosphere for detectors, nitrogen also plays a crucial role as a carrier gas for transporting samples in analytical instruments.

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The gas used for sample transport in analytical instruments is referred to as the carrier gas.

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Common carrier gases include hydrogen, helium, nitrogen, argon, and carbon dioxide. The choice and purification of carrier gases typically depend on the type of detector used, as well as considerations of safety and cost.

The purity of the carrier gas is crucial; higher purity is preferred because impurities such as oxygen and moisture can interact with the stationary phase of the chromatographic column, leading to degradation of the stationary phase, reduced column efficiency, and decreased sensitivity of the detector, which can result in inaccurate measurements of trace components. Additionally, since experiments often take a long time, it is important for the carrier gas to have consistent stability.

As an important gas separation device in laboratories, nitrogen generators provide high purity, good stability, ease of operation, and energy efficiency, leading to their widespread use in laboratory settings.

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High Purity: 

Nitrogen purity of 99.999%, meeting the high demands for carrier gas purity in laboratories.
Good Stability:
100% factory testing before shipment, using international top components to ensure a consistently stable output of pure nitrogen.
Easy Operation:
Nitrogen can be generated on-site by simply turning on the power switch. The intelligent touch screen panel provides clear and straightforward operation.
Low Operating Costs:
No reliance on external gas suppliers, eliminating transportation costs and reducing nitrogen loss.
High Safety:
On-site nitrogen generation effectively avoids safety hazards associated with high-pressure gas cylinders and low-pressure liquid nitrogen tanks. It is equipped with an alarm system and maintenance reminders to ensure safety during operation.