Within a GPC/SEC Chromatography system, a viscometer allows use of a universal calibration. Molecular weights obtained with this method are therefore independent of the polymer standards used to build the calibration and can be considered to be close to absolute values. Also, a viscometer will allow determination of further molecular parameters giving insight about the physical structure of the investigated polymer and even opening the gate to determination of branching parameters. All viscometers for GPC/SEC currently on the market, base their principle on the measurement of the differential pressure across a capillary network. TESTA has been able to dramatically reduce the noise level and increase sensitivity by more than an order of magnitude compared to any viscometer available. This allows usage at much lower flow rates than it has been possible. Detection of lower molecular weight and at lower concentration are now also possible. Semi-micro applications are currently easily reached.

TESTA Analytical Solutions e.K. is a technology innovator and specialist supplier of high-performance HPLC and GPC/SEC detectors and instruments plus a range of non-invasive, real-time flowmeters that are enabling scientists to solve application challenges faster, more reliably and with greater sensitivity. With over 30 years' experience of these problem-solving technologies, we are happy to share our knowledge with researchers worldwide. Not only are our products designed to deliver top performance but our diligent commitment to quality ensures that you get many years of reliable operation even under the most demanding conditions. We pride ourselves on providing a level of technical and applications support that few companies can match. As a small, dynamic company we maintain the flexibility to not only offer you off-the-shelf solutions but also to develop tailored OEM systems for a growing number of world renowned analytical and process instrument suppliers.to exactly match their application needs.
To know more, please click to: www.testa-analytical.com and www.custom-chromatography.com.