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April 28th 2021

New Multi-Detector GPC/SEC System


With our new HK Series Multi-Detector GPC/SEC System, you can choose from a wide combination of detectors including refractive index, multiple angle light scattering (MALS), viscometry, UV and flow measurement This versatile platform can be used to analyse a wide range of even complex polymers, regardless of molecular weight range or solvent.

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April 21st 2021

Accelerate Your HPLC Pump Calibration


HPLC Pumps are commonly calibrated with a gravimetric method by weighing the amount of solvent delivered within a given time and then, using density as parameter, calculating the real flow rate. While this method can be extremely accurate, it is also relatively time consuming, often taking in excess of 30 minutes. The TESTA Liquid Chromatography Flowmeter can measure HPLC flow rate in real time and it also tracks each measurement automatically with microsecond resolution, thus allowing fast and reliable collection of flow rate data. It can be demonstrated, using the flowmeter that you can achieve calibration of a typical HPLC pump in less than 3 minutes with an accuracy comparable or even superior to the gravimetric method.

Further Information

April 14th 2021

HPLC System Troubleshooting

Constant flow of solvent through an HPLC System is of paramount importance, as results obtained can be distorted by changes in flow rate. New data shows how our Liquid Chromatography Flowmeter can be used to determine just how constant flow from your HPLC pump really is. The flowmeter is proven to reveal the smallest leaks present in an HPLC system, seal rings close to their wear limit and also randomly malfunctioning HPLC pump valves. More than all this, the flowmeter can also reveal possible blockages at the outlet of your system as well.

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April 8th 2021


Liposomes are commonly used in drug delivery applications to encapsulate and deliver bioactive cargo molecules such as oligonucleotides and proteins. A new application is available that discusses how Liposomes may be characterized using Dynamic Light Scattering (DLS) and Zeta Potential techniques.

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