SEDEX PA — Polymer Analysis, Perfected at Any Temperature

The Next‑Generation LT‑ELSD for Polymers, Oligomers and Macromolecules

The SEDEX PA is SEDERE’s advanced LT‑ELSD detector dedicated to polymer, oligomer and macromolecule analysis. Specifically engineered for SEC/GPC workflows, it combines SEDERE’s signature Low‑Temperature sensitivity with the ability to operate at high temperatures when required, providing exceptional flexibility for challenging polymer matrices and high‑boiling‑point mobile phases.
Whether the method requires protecting delicate oligomers or efficiently evaporating aggressive or exotic solvents, the SEDEX PA adapts seamlessly to your chromatography conditions. Its optimized aerosol generation and evaporation design ensure stable baselines, clean peak shapes, and reliable quantificationacross wide molecular weight distributions.
To guarantee maximum chemical compatibility, all wetted parts are made exclusively of Glass, Stainless Steel, Aluminium and PTFE, ensuring long‑term robustness even with aggressive or unconventional polymer solvents. 

Compact, precise and fully software‑controlled, the SEDEX PA integrates effortlessly into any SEC/GPC or HPLC system, bringing new levels of performance and versatility to polymer characterization, formulation development, and advanced materials research.
It is recognized as a market‑standard LT‑ELSD for GPC/SEC analysis, designed for laboratories handling complex polymer chemistries and demanding detection requirements. 

Why Choose SEDEX PA for Polymer Analysis?

✔ Dual‑Mode Evaporation

True Low‑Temperature detection for thermally sensitive oligomers + high‑temperature capability for viscous or high‑boiling solvents.

✔ Fully Inert Wetted Materials

Only Glass, Stainless Steel, Aluminium and PTFE in contact with the mobile phase — ideal for aggressive solvents used in polymer science.

✔ Universal Detection

Works with all analytes — chromophoric or not — making SEC/GPC interpretation simpler and more representative of true sample composition.

✔ Polymer‑Optimized Nebulization & Cell Geometry

Minimizes band broadening and preserves resolution across broad molecular weight distributions.

✔ Stable, Low‑Noise Baselines

Ensures reliable quantification and smooth chromatograms, even under difficult SEC/GPC conditions.

✔ Advanced Digital Signal Processing

Enhanced sensitivity and robust detection of low‑abundance oligomers, additives and degradation products.

✔ Full Software Integration

Compatible with major CDS platforms and includes automated end‑of‑run shutdown.

✔ Built for Complex Polymer Matrices

Excels with additives, stabilizers, copolymers, blends, residual monomers and degradation profiles.

Ideal Applications

The SEDEX PA is tailored for advanced materials and polymer science, including:

✔ SEC/GPC Polymer Profiling

Characterization of molecular weight distributions, including broad or multimodal populations.

✔ Copolymer & Blend Evaluation

Reliable detection of chemically diverse monomer units without chromophore bias.

✔ Stabilizer & Additive Quantification

Universal detection of antioxidant packages, UV stabilizers, slip agents, lubricants, etc.

✔ Oligomer & Residual Monomer Detection

Enhanced sensitivity for low‑mass species in polymer synthesis and purification.

✔ Polymer Degradation Studies

Monitoring of breakdown products in aging, stability and environmental stress experiments.

✔ Non‑Chromophoric Component Identification

Ideal for polyolefins, silicones, polysaccharides, fluoropolymers and other materials with poor UV response.

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