GPC / SEC
Four detectors, one question each
Each channel answers a different question about the same slice of sample. Together they remove the dependence on a conventional calibration curve.
Tell us about your polymerdRI
Concentration
Mass at every slice, via dn/dc. The universal reference channel.
UV-Vis
Composition
Chromophore content across the distribution for copolymers and conjugates.
Light scattering
Absolute molecular weight
Molar mass from scattered light, independent of column standards.
Differential viscometry
Intrinsic viscosity and structure
Intrinsic viscosity, Mark-Houwink parameters and long-chain branching.
Have a question about a detector?
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