The Differential Refractive Index (DRI) Detector from Testa Analytical Solutions is a next-generation instrument for challenging GPC/SEC applications.

The DRI Detector has been designed to fit seamlessly with all commercially available MALS and SLS detectors resulting in more accurate and reliable results. Its high sensitivity makes the Testa Analytical DRI Detector the perfect companion for characterization of natural and synthetic polymers as well as protein investigations that demand leading edge performance.

The instrument operates at the same wavelength as MALS and SLS detectors thereby enabling determination of both absolute concentration and also total mass balance. Operating from room temperature up to 80 °C underlines the unmatched operational flexibility of this instrument. Designed to operate in both horizontal and vertical orientations, the compact DRI offers the versatility to fit your available benchspace.

While developed for use with GPC/SEC multi detector systems, the DRI detector also provides unbeatable performance in more classical HPLC application such as detection of sugars and is available optimised for low flow rates down to 300 µL/min.

For further information on the DRI Detector please visit For further information on the DRI Detector please visit DRI Flyer** or contact Testa Analytical Solutions on +49-30-864-24076 / info@testa-analytical.com.

Testa Analytical Solutions e.K. is a company dedicated to supplying the best possible instrumental solutions for characterization of polymers, particles, nanomaterials and proteins. Drawing upon over 30 years experience of technologies serving these markets, the staff at Testa Analytical are happy to share their knowledge with researchers worldwide to help provide them with a working solution for even the most demanding applications.