When and why do traces of elements need to be measured?

Measuring trace elements is essential for a variety of applications. For instance, in environmental analysis, it’s critical to monitor heavy metals like mercury, lead, cadmium, and arsenic because they can be harmful to both humans and ecosystems. In addition to hazardous elements, even common ones such as carbon, hydrogen, and sulfur are sometimes analyzed, as their levels can indicate changes in climate or industrial processes.

I like that I can make a small contribution to a clean and safe world by enabling more data to be collected on pollution levels, in combination with analysis devices manufactured by others.

Pharmaceutical companies increasingly use TEA techniques to ensure the purity of their final products. However, there are many other applications, all of which require precise and reliable flow control. That's why we often work closely with our customers to recommend the best flow solutions tailored to their specific needs.

What is the specific function of a flow controller during analysis?

During elemental analysis, the sample is first separated into its components, then detected. A carrier gas is used to transport these components through the system, while other gases may be required for chemical or physical reactions. These gases must be highly pure, as the elements being measured are present in very small amounts. Flow controllers and meters must therefore be extremely accurate and reproducible to ensure consistent and reliable results.

Can you tell us a bit more about these specific needs and requirements?

Each analysis device has unique requirements when it comes to flow meters and controllers. Factors such as the device’s design, signal processing method, control system, and power supply all play a role in selecting the right equipment. Price is also an important consideration. Working closely with our customers’ engineers ensures that we can deliver optimal solutions tailored to their needs.

Bronkhorst flow controllers already have self-diagnostic capabilities, and we’re exploring ways to offer predictive maintenance, such as analyzing valve tension to anticipate potential issues. Right now, I’m working closely with pharmaceutical companies to better understand their needs in trace element measurement — I’d love to hear from readers who have insights or questions on this topic!