Laboratories often need to find out what compounds are present in a sample and how much of each one is there. But samples can vary widely, and some are much more difficult to analyse than others.

EXPEC offers GC-MS, GC-MS/MS and LC-MS/MS systems for different laboratory requirements. At the Arablab Laboratory Exhibition, Business Communications LLC will present selected EXPEC technologies, giving visitors an opportunity to understand where each approach can fit into their laboratory work.

Different Samples Need Different Ways of Testing

Choosing a mass spectrometry system starts with a simple question: what do you need to find in the sample?

Some compounds work well with gas chromatography, while others are better analysed using liquid chromatography. When the sample contains many different substances, laboratories may also need a more selective system to focus on the compounds they are looking for.

EXPEC 3750 GC-MS: Finding and Identifying Compounds

The EXPEC 3750 combines gas chromatography with mass spectrometry.

In simple terms, the GC first separates the different compounds in a sample. The mass spectrometer then helps identify what those compounds are.

This type of GC-MS system can be useful for:

• Volatile and semi-volatile compounds
• Environmental samples
• Food-related testing
• Chemical analysis
• Routine laboratory testing

For laboratories that need to separate and identify compounds in suitable samples, the EXPEC 3750 provides a practical GC-MS approach.

EXPEC 5232 GC-MS/MS: Looking More Closely at Target Compounds

Testing becomes more difficult when a sample contains many different substances and the laboratory needs to focus on specific compounds.

The EXPEC 5232 is a triple-quadrupole GC-MS/MS system.

Rather than looking broadly at everything in the sample, GC-MS/MS can help laboratories focus more closely on selected target compounds.

This can be useful for:

• Pesticide residue testing
• Food-safety analysis
• Environmental testing
• Complex samples
• Targeted compound measurement

The key difference is simple: when a laboratory needs greater selectivity in a complicated sample, GC-MS/MS provides a more targeted approach.

EXPEC 5210 LC-MS/MS: When Liquid Chromatography Is the Better Route

Not every compound is suitable for gas chromatography.

The EXPEC 5210 combines liquid chromatography with triple-quadrupole mass spectrometry. The liquid chromatograph separates the compounds before the mass spectrometer measures the selected targets.

This approach can be useful for:

• Pesticides
• Pharmaceutical compounds
• Environmental contaminants
• Food-safety testing
• Biological samples
• Compounds better suited to liquid chromatography

For laboratories working with these types of samples, LC-MS/MS provides another route to targeted analysis.

Start with the Sample, Not the Instrument

GC-MS, GC-MS/MS and LC-MS/MS may sound similar, but each approach serves a different laboratory need.

The easiest way to understand the difference is to begin with the sample and what the laboratory wants to find.

Three Systems, Three Different Testing Needs

A simple way to look at the EXPEC systems is:

• EXPEC 3750 GC-MS – separates and identifies compounds suited to gas chromatography.
• EXPEC 5232 GC-MS/MS – provides a more targeted approach when specific compounds need to be measured in complex samples.
• EXPEC 5210 LC-MS/MS – supports targeted analysis for compounds better suited to liquid chromatography.

Before selecting a system, laboratories can consider:

• What compounds need to be measured?
• What type of sample is being tested?
• Is the sample simple or complex?
• Is broad identification or targeted measurement required?
• Is gas or liquid chromatography more suitable for the compounds?

Starting with these questions can make the technology much easier to understand.

See How the Three Mass Spectrometry Paths Differ at ARABLAB

At Sheikh Saeed Hall 1, Stand SSH1-B40, BCL will present selected EXPEC mass spectrometry technologies during ARABLAB Dubai 2026.

Visitors can look at:

• The difference between GC-MS and LC-MS/MS
• When triple-quadrupole technology becomes useful
• How sample type influences instrument choice
• Different approaches for routine and targeted analysis
• Options for new laboratory projects and equipment upgrades

For professionals attending the Arab Lab Exhibition, this is an opportunity to understand the differences without getting lost in technical specifications.

Visit Business Communications LLC at Sheikh Saeed Hall 1, Stand SSH1-B40, from 26–28 October 2026 at Dubai World Trade Centre to learn more about EXPEC mass spectrometry technologies.