Lab Nitrogen Generator

What Purity Level of Nitrogen Is Required for Gas Chromatography Analysis?

Apr 03, 2025

Gas chromatography (GC) is a highly sensitive analytical technique used in laboratories worldwide for separating and analyzing volatile compounds. To ensure accurate and reliable results, the ​purity of nitrogen gas used as a ​carrier gas, detector gas, or purge gas is critical.

 

​Why Nitrogen Purity Matters in GC?

​Baseline Stability: Impurities like oxygen, moisture, or hydrocarbons can cause baseline noise, peak distortion, and false readings.

​Column Protection: Oxygen (>1 ppm) can degrade GC columns, reducing their lifespan and separation efficiency.

​Detector Performance: High-purity nitrogen ensures optimal sensitivity in detectors like ​TCD (Thermal Conductivity Detector) and ​ECD (Electron Capture Detector).

For most GC applications, ​nitrogen purity of ≥99.999% (5N) is required, with:

 

​Oxygen (O₂) < 1 ppm

​Moisture (H₂O) < 3 ppm

​Hydrocarbons (THC) < 0.1 ppm

 

​Sciway’s High-Purity Nitrogen Generators – The Smart Choice for GC Labs

At ​Sciway Tech, we provide cutting-edge ​nitrogen generators designed specifically for ​gas chromatography and other analytical applications. Our ​Sciway NG Series delivers ultra-high-purity nitrogen (up to ​99.9999%​) with:

✔ ​Advanced PSA (Pressure Swing Adsorption) Technology – Ensures consistent purity.

✔ ​Built-in Filtration & Purification – Removes O₂, H₂O, and hydrocarbons effectively.

✔ ​On-Demand Nitrogen Supply – Eliminates the need for costly gas cylinders.

✔ ​Low Maintenance & Compact Design – Ideal for lab environments.

 

Why Choose Sciway?

✅ ​Cost-Effective – Save up to ​80%​ compared to bottled nitrogen.

✅ ​Reliable & Safe – No risks of cylinder leaks or supply shortages.

✅ ​Customizable Flow Rates – From ​500 mL/min to 20 L/min, tailored to your GC needs.

 

Upgrade your lab with ​Sciway’s nitrogen generators and experience ​unmatched purity, efficiency, and convenience.

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