Absolute
Absolute calibration is also known as Triple Detection (or TDA for short) although these days we often use 4 or 5 detetcors.
It requires a proper laser light scattering detector in addition to a mass detector and the Intrinsic Viscosity detection.. in return you have to calibrate only once and you gain in the detail in the distributions.
- The light scattering detector provides a direct measurement of absolute molecular weight and eliminates the need for column calibration.
- The viscometer detector provides a direct measurement of intrinsic viscosity or molecular density, and allows the determination of molecular size, conformation and structure.
- Concentration is measured as usual with an RI or UV necessary for the determination of both molecular weight and intrinsic viscosity.
Products | Technology |
TDA 305 detector | Triple detection for MWt and structure of Chitosans |
Triple detection gives polymer structure, branching |