AGS-T1200 Ultra-High-Purity Nitrogen Generator — A Stable and Clean On-Site Nitrogen Supply for TOC Analysis

For TOC (Total Organic Carbon) analysis, a stable and clean gas supply is an important prerequisite for reliable instrument operation. Traditional TOC analysis systems typically rely on high-pressure gas cylinders to supply nitrogen or other required gases. For laboratories that operate these instruments over extended periods, gas cylinders require regular purchasing, replacement, and transportation, while also creating additional challenges related to storage, safety management, and continuity of gas supply.

More importantly, for analytical applications such as TOC analysis, where background contamination can be a concern, hydrocarbons, moisture, and other impurities in the gas supply may become potential sources of interference.

To address these practical requirements, ATARICO has developed the AGS-T1200 Ultra-High-Purity Nitrogen Generator.

The AGS-T1200 integrates nitrogen generation, compression, drying, and catalytic purification into a single system. No external compressed-air supply is required. An integrated oil-free, low-noise compressor enables on-site nitrogen generation, while a multi-stage purification system further reduces impurities such as moisture and hydrocarbons.

It is more than simply a nitrogen generator—it provides laboratories with a stable, continuous, and convenient on-site gas supply.

1. Why Does a TOC Laboratory Need a More Reliable Gas Supply?

For TOC analysis systems that operate over extended periods, conventional cylinder-based gas supply can present several practical challenges:

(1) Frequent Gas Cylinder Replacement

As instruments operate continuously, gas is consumed on an ongoing basis. Laboratories need to regularly check the remaining gas volume and arrange cylinder replacement. If a cylinder runs out before a replacement or backup supply is available, instrument operation may be interrupted.

(2) Gas Cylinder Transportation and Storage Add to Laboratory Management

High-pressure gas cylinders require transportation, securing, storage, and replacement. They also occupy laboratory space and add to routine operational and safety management.

(3) Gas Supply Depends on External Suppliers

Laboratories need to manage purchasing, delivery schedules, inventory, and gas availability. For analytical instruments that require long-term and continuous operation, this creates an additional gas-supply management process that is separate from the analytical work itself.

(4) Gas Cleanliness Is Equally Important

TOC analysis focuses on measuring trace levels of organic carbon in samples. Therefore, in addition to meeting the instrument's basic gas purity requirements, reducing potential contaminants such as hydrocarbons and moisture in the gas supply can also help minimize the potential impact of the external gas source on the analytical process.

2. Multi-Stage Purification for Cleaner Nitrogen in TOC Analysis

The AGS-T1200 is not simply a nitrogen generator based on PSA technology. It combines molecular sieve adsorption for nitrogen generation with multi-stage high-temperature catalytic purification.

(1) Molecular Sieve Adsorption for Nitrogen Generation

Molecular sieves selectively adsorb different components of air to separate and produce nitrogen.

Maximum nitrogen purity: 99.9999%

(2) Multi-Stage Moisture Removal

The system integrates a drying system and dual-tower adsorption drying system to further reduce moisture in the output gas.

Atmospheric dew point: down to -55°C

(3) Catalytic Hydrocarbon Removal

For TOC analysis, hydrocarbon contamination is particularly worth considering. The AGS-T1200 incorporates a precious-metal catalyst that uses a controlled high-temperature catalytic process to reduce hydrocarbon compounds in the nitrogen supply.

3. Real-World Application: AGS-T1200 Supplies Nitrogen to the Shimadzu TOC-Vwp

The AGS-T1200 has been applied as the gas supply for a Shimadzu TOC-Vwp Total Organic Carbon Analyzer. In this application, the AGS-T1200 provides high-purity nitrogen generated on site, replacing the conventional high-pressure cylinder supply.

From the actual operating interface, the TOC-Vwp can be seen performing multiple analysis injections under normal operating conditions. The analytical and detection signals show stable and repeatable responses, and the system completes the analysis process normally.

This application demonstrates that the AGS-T1200 can serve as an on-site nitrogen supply system for the Shimadzu TOC-Vwp, providing continuous nitrogen support for TOC analysis.

For laboratories that operate TOC analyzers over extended periods, this can offer a practical alternative to conventional cylinder-based gas supply.

Switching from cylinder gas to on-site nitrogen generation does not require changes to the laboratory's core analytical workflow. The main change is simply replacing the existing gas supply connection with the AGS-T1200.

4. Designed for Long-Term Laboratory Operation

The AGS-T1200 focuses not only on gas quality but also on convenience and reliability for long-term laboratory operation.

(1) Integrated Design

The system integrates an oil-free, low-noise compressor, heat-exchange system, drying system, purification system, and filtration system, eliminating the need for an external compressed-air supply.

(2) PLC-Based Intelligent Control

A PLC automatically controls the adsorption, switching, and purification processes, enabling fully automatic operation.

(3) Real-Time Operating Monitoring

Sensors continuously monitor operating parameters such as flow rate, temperature, and pressure, while operating data can be recorded for monitoring and management.

(4) Intelligent Temperature Control

Temperature sensors and PLC-based control regulate the catalytic temperature, helping improve the stability and safety of the catalytic purification process.

(5) One-Touch Start

The system operates automatically. Once started, it can automatically complete nitrogen generation, purification, and gas supply.

5. A Simpler and More Reliable Gas Supply Solution for TOC Analysis

TOC analysis requires stable instrument operation—and stable gas supply is an important part of that process.

The AGS-T1200 integrates high-purity nitrogen generation, compression, drying, and purification into a single system, reducing dependence on high-pressure gas cylinders and external gas suppliers.

For laboratories that operate TOC analyzers over extended periods, on-site nitrogen generation can make gas supply management simpler and more convenient.

From its application with the Shimadzu TOC-Vwp to the growing demand for on-site gas supply solutions for other TOC analysis systems, ATARICO is committed to providing laboratories with a nitrogen supply solution that is:

More stable. More convenient. More self-sufficient.

Kathy
Sales Manager 
Email: yukaixuan@atarico.com
WhatsApp: +86 153 4531 5457