Choosing the Right AGC Gas Chromatograph: Do’s and Don’ts

From industrial process monitoring to laboratory research, a gas chromatograph (GC) is a powerful analytical tool for separating and quantifying compounds within a gas sample. In particular, AGC gas chromatographs are engineered for precision across a wide range of applications. 

Therefore, selecting the right model is important to not only gain accurate readings but for long-term reliability and cost-effectiveness. This article will walk you through the key considerations in choosing the right AGC gas chromatograph, the do’s and don’ts during selection, and why Sintech Scientific is a trusted partner for AGC instruments in Singapore.

Evaluating Sample Type and Application Needs

The first step in selecting a gas chromatograph is understanding the sample type as this determines the type of gas analyzer configuration needed for your industry or lab. For example:

• For permanent gases (e.g. N₂, O₂, H₂) a Thermal Conductivity Detector (TCD) is ideal.
• While a Flame Ionization Detector (FID) may be needed for trace hydrocarbons

Another factor to consider is the intended application as the requirements of a gas analyzer can vary depending on the settings.

Industrial Applications of Gas Chromatographs

In sectors such as natural gas, petrochemicals, and environmental monitoring, gas chromatographs must handle rugged conditions, continuous operation, and sometimes field installations. This makes reliability and durability critical factors to consider during selection.

Laboratory Applications

In contrast, laboratory GCs sometimes focus more on precision and compatibility with a wide variety of detectors. This is because researchers need analyzers that deliver fine resolution and repeatable accuracy for small and specialized samples.

Do’s When Selecting a Gas Chromatograph

When evaluating AGC models, follow this checklist to ensure the right fit:

• Confirm the GC supports the detector types (TCD, FID, DID, ADD, FPD, etc.) your application requires.
• Check instrument stability and drift behavior as long-term drift is a common issue, so choose a system with auto-zeroing and built-in calibration routines.
• Assess integration and interface options. Ensure the instrument can output data in forms your lab or process control system can handle (e.g. 4-20 mA, Ethernet, USB, digital bus).
• Check instrument specifications for precision, repeatability, and detection limits that align with your analytical goals.
• Evaluate support and service availability to minimize downtime and long-term reliability.

Don’ts to Avoid in the Selection Process

Avoid these pitfalls to prevent degraded data and money wastage on the wrong instrument.

Don’t:

• Assume one model fits all applications without evaluating sample type.
• Underestimate the importance of ongoing calibration and service support.
• Rely on the lowest bid without validating performance and support.
• Neglect user training and ease of operation in day-to-day use.
• Ignore safety or compliance features, especially if your environment has hazardous area requirements.

Preventing these mistakes ensures that you select a gas chromatograph that provides accurate and reliable results. It is also important to look at the specific AGC gas analyzer models to support your needs.

ACG Gas Analyzer Models and Features

These are a some of the AGC models designed for both laboratory and industrial settings: 

• NovaCHROM series: This GC line has multiple detector configurations; e.g. Discharge Ionisation Detector (DID), Thermal Conductivity Detector (TCD), etc.  Compact and easy-to-use, each NovaCHROM unit is built for high sensitivity and repeatability.
• NovaCHROM 9000 ASU GC System: This system is tailored for air separation unit (ASU) analysis, featuring pressure/flow control, purged valve boxes, and a user-friendly setup.
• NovaPRO 9000 Process Gas Chromatograph (PGC): Designed for continuous monitoring in process environments, this instrument is excellent for industrial settings. 
• NovaSTREAM 6000 Gas Analyzers: A continuous analysis platform for measuring key and trace gases. Also available in various detector configurations, supports fast responses and stable drift for continuous gas monitoring tasks
• ALNG-6000 Sampling System: A sampling solution that can be integrated with other GC or analyzer systems. It is designed to extract liquid natural gas samples from pipelines and convert them into gaseous form for accurate laboratory analysis.
• Accessories and Support Systems: To complement their gas analyzers, AGC offers complementary products such as NovaPURIFIER carrier gas purifiers, zero-air generators and other sample handling modules. 

All these models are designed with modular components, robust detectors, and automated calibration options to support reliable and repeatable analysis with minimal maintenance.

Why  Partner With Sintech Scientific for AGC Instruments

Selecting the right instrument is only half the journey; the right partner is needed for long-term success. If you are seeking a reliable AGC distributor in Singapore, consider Sintech Scientific.

We provide expert guidance to match our customers with the right model and also offer after-sales service, calibration support, and technical expertise so you don’t have to worry about maintaining accuracy and reliability even in demanding environments.

Want an expert partner that delivers? Contact us today to explore our range of AGC gas chromatographs.