Differential Viscometer Detector (for 270max)

The differential viscometer detector provides a direct and sensitive measurement of intrinsic viscosity and allows for the determination of molecular size, conformation and structure.

Viscotek invented and patented the first differential viscometer detector and that experience is packed into the 270 giving high sensitivity, excellent baseline stability and wide applications flexibility. In the measuring flow-path, the use of inert capillaries means the analysis of proteins and other biomolecules can be completed with confidence.

For polymers and polysaccharides, the viscosity information shows the complete Mark-Houwink relationship of molecular weight to intrinsic viscosity at all points to determine structure and measure the branching properties such as number of branches vs. molecular weight.

For proteins, the determined intrinsic viscosity gives a clear measurement of the protein density.

More information

	Featured presentations and application notes:
	Application communication: Universal calibration to study star-branched polystyrene It is shown in this application communication that the number of branches of a star polymer can be assessed by merely adding a viscometer detector to a conventional chromatography system.
	Application communication: Determination of polymer structure by GPC It is advantageous to use light scattering to determine molecular weights provided the signals are sufficiently intensive strong. Triple detection combines these detection capabilities into a single system to give molecular weight and structure without limitations.
	On-demand presentation: Quality Control Analysis of CPVC Pipe Using Advanced Detection GPC Chlorinated polyvinylchloride (CPVC) is a common thermoplastic used for applications requiring an economical material for liquid handling. The process of manufacturing CPVC pipe follows two basic steps. The material is first compounded with a variety of additives to control both functional an aesthetic properties and is then extruded under heat and pressure to mold the final product. In some cases, the final product does not contain the required physical properties. The material’s performance can be directly linked to the structural deficiencies of the CPVC. To monitor these changes, the CPVC can be isolated, separated by GPC, and analyzed using advanced detection to determine inconsistencies in the structural properties that may arise during the extrusion process. These changes, whether they are structural or chemical, can be correlated back to the stability of the virgin CPVC used, preventing further processing of defective material
	More application notes and online presentations are available to search for FREE in the Malvern Application Library and Presentations Database (Requires Free registration).