Dual detector for demanding GPC/SEC applications

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The COMBO-ONE Viscometer/DRI detector from TESTA Analytical sets a new standard for demanding GPC/SEC applications such as those focused on investigating the structure and branching of polymers.

“By eliminating the fundamental drawback of the traditional online viscometer design, the known ‘sample breakthrough’ after each measurement, our dual detector allows much more rapid sequencing of samples," said Carlo Dessy, developer of the COMBO-ONE. "The result of our design innovation is to increase the total daily throughput of a GPC/SEC System by a factor of two. An additional benefit of eliminating ‘sample breakthrough’ is a significant reduction of solvent required for each measurement and consequently the amount of waste produced.”

Viscometry detectors for GPC/SEC, based on four matched capillary tubes arranged in a manner analogous to a Wheatstone bridge, have been around for decades but have operational and performance shortfalls. The COMBO-ONE Viscometer/DRI detector from TESTA Analytical is fully compatible with all modern GPC/SEC systems.

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