|Articles|December 3, 2019

Full Characterization of Polymers Using the ACQUITY Advanced Polymer Chromatography (APC) System with Multi-Detection

⦁ How equipping LC with multi-detection technology enables achieving high quality, high-resolution, and rapid sample analysis. ⦁ Leverage LS and RI detectors and viscometer technologies to calculate absolute molecular weight, hydrodynamic radius, and structure of the materials.


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Figure 2. Split injection used to measure triplicate test of MTBE, hexane, o-xylene, and 1-methylnaphthalene comparing different solvents (methanol, methylene chloride) and column insertion distances starting with 0.5 mm, 5.0 mm, 10.0 mm, 15 mm, and 20.0 mm. Methanol had the best performance at the 5.0 mm insertion distance and methylene chloride looked slightly better at the 0.5 mm. We would still recommend not going below the 5.0 mm manufacturer recommended insertion distance.
Revisiting insertion distance for methanol and methylene chloride in GC analysis and confirming that insertion depth strongly affects response and reproducibility.