July 31st 2025

Looking to characterize polymers, proteins or polysaccharides?

Incorporating a viscometer detector as part of your GPC/SEC system is a go-to method for providing a detailed insight into the physical structure of a wide range of macromolecules. However, not all viscometers are the same. The unique design of TESTA’s viscometer dramatically reduces signal noise thereby increasing sensitivity by more than an order of magnitude compared to any other commercially available viscometer. This allows you to work at lower flow rates and detect polymers, proteins, and polysaccharides at lower concentrations and of lower molecular weights, even enabling routine semi micro-GPC/SEC applications.

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FAQ: Can I use a TESTA flowmeter to control my preparative chromatography pump?

A: Our Prep Flowmeter is designed to monitor and accurately measure (in realtime) liquid flow rates up to 650 ml/min. As TESTA flowmeters are fully supported by popular Chromatography Data Systems including OpenLab, Clarity and WinGPC, using this facility a feedback information loop can be generated so that the measured flow rate is used to actively control the connected pump.

In the Press: Streamline Macromolecular Analysis.

Many thanks to the editorial team at Lab Manager. They recently reported how Laboratory managers seeking to enhance the precision and efficiency of macromolecular characterization can benefit from our easy-to-use LS Assistant. This accessory for MALS instruments delivers accurate specific refractive index (dn/dc) measurements, essential for determining molecular weights of various macromolecules.

Combination detector for High-Resolution GPC applications.

Our COMBO-TWO detector package is fully compatible with all commercial GPC systems operating from room temperature up to 80°C. Obtaining highly accurate and reliable MALS and DRI data using a COMBO-TWO is simple – just inject your sample into the low-volume flow cell. The outstanding stability of our COMBO-TWO detector package is the key to producing reproducible top quality data from high-resolution GPC applications which can have separation times of up to one hour.

Clarity software support for TESTA flowmeters.

Clarity is a powerful chromatography data software package for acquisition, processing, and instrument control used in regulated environments worldwide. DataApex, developer and supplier of Clarity software, has announced that its latest version 10 now fully supports all TESTA Analytical flowmeters, from the µFlowmeter up to the Prep-Flowmeter. The seamless connection of our high-performance, non-invasive flowmeters with Clarity, offers liquid chromatograph users precise and traceable real-time tracking of flow. This means that flow data is stored together with each chromatogram thus providing a robust qualification of each and every measurement performed.